Talk to the person who gave you the red trust.

You can't use Paypal for bitcoin and "be more cautious". Escrow is not an option, as Paypal-chargebacks will end up at the escrow supplier. It may be possible to escrow the bitcoins only, but that still leaves the possibility of your Paypal being charged back sooner or later.
What you want is to exchange Paypal for bitcoin. It is (almost) impossible to do that in a secure way.

I hate to say it, but: I told you so! "Friends & Family is for, as the name says, friends and family.". You are trying to cheat Paypal's fees, one way or another someone gets scammed if you do that.

Friends & Family is for, as the name says, friends and family. I've read about someone who got his Paypal-account closed after accepting a payment from a scammer this way. This option is for people you know and trust, and it will be a charge back after creditcard fraud of if the account has been stolen.

There are safer ways to get your Bitcoins on your own Paypal-account.

I do not trust it either. Paypal has a lot of very decent options to transfer money to your own bank account, in my country without extra charge. Of course you pay a percentage to convert USD to your local currency, but you can also make your customers pay in your local currency directly. There are better ways to do this, if it is a legit offer. The fact that you want bitcoins makes me doubt your offer.
All in all this sounds like an offer I would not trust.

Starting with an L is the fastest addy. Here you go:
Address: 1Loan6qcTLm6V1koTWVGbYsuxX6J1hEz8S (Balance: )
PrivkeyPart: 5KdTLDoXVGa8beAiQ4xB9PjuvQ5fW8PEPfGqbvXaHFAh32YnmTp

Case sensitive is no problem for 5 characters. Here it is:
Address: 1JtiptJgw1vTteB66ocAXAQQcdgcT3yUcb (Balance: )
PrivkeyPart: 5KbWJipYHQBxLnBt9PqUXHRDVUJvbeT5hZ2MyhZMeg1QDFvzxp6

Unless I say otherwise, this giveaway is open

I got you 2 options, I like the second one much better:
Address: 1BAtMAni2931DyAhwZMUdfyqDY6wGiCNDQ (Balance: )
PrivkeyPart: 5HusmU7hxGqiAWcJZLJrZvGvoaQidfamJ6bhuCpTFyVhfVdXVeb

Address: 1BatmanboAGH7NortEu45PcnVXHnJKcyH3 (Balance: )
PrivkeyPart: 5KDVJoBqDpfnbwnHByjhzhM7iW398CmMup5fN8gkvQgWXzLkyQL

Here you go:
Address: 1SponsafYDAaoGjvuUsVupjfAXGvMQ9t8 (Balance: )
PrivkeyPart: 5JF8A7wtZJjijDpTYr2eP4KERPc85kut1r4Cqpc2fNW5q3YK99N

Address: 1LordPnEi77bqPHj93hKYS1Cic8JwrecaE (Balance: )
PrivkeyPart: 5JAn9Ei3Q1RKSGtJKvW98x5GGuB1UhTxP3ZE9dWBCHi26usBhMe

You're welcome

Go ahead

"PrivkeyPart": note the "Part". The Instructions in the OP explain how to use it.
But don't trust my word for it: Try to use any of the PrivkeyParts from this topic to access the account See what happens

It varies, usually a few days.

The only cap is how much time and computing power you have.

You can use both. But I'm not sure what the implications are, as they use the same part private key. That links them together now, I think (but I'm not 100% sure) if one would get compromised, the other one is no longer safe either.

7 characters is a bit much for a giveaway. Since I didn't need my computer for a while, I got you one anyway, just case insensitive:
Address: 1EBeSEDeyqjaQz3EAP7mQn6KWPHt1Fb4WH (Balance: )
PrivkeyPart: 5KG899d3KT68w7YvkGN4KfkeVXSmEC4FUbdSGeGWkjJeQV2z9vF

1Decode is 50 times more likely than 1decode, so I got you this one:
Address: 1DecodejtC6yUjnL7DzCeZ2Do8LoYjCi9q (Balance: )
PrivkeyPart: 5HtGgCCrNh7yemq7gBKh4c3Z8dSZC8QR25UgehPtT8HyYaDEoNh

I tried for 1decode or 1Decoded overnight, but it did not show up.

Can you share a public key as described in the topic start?

"l" is not possible. I got you these two options:
#1
Address: 1JAMALMRib5H3JSvt8Cc4BQ6oZwe45FHiF (Balance: )
PrivkeyPart: 5Jw465TnJVJ9CadHsE4BWXfiioEDFhpeKYPkoysjFPfNNWD2iv2
#2
Address: 1JAMALjpkZxhaw27EhzAeLvuiRNGBHxbgY (Balance: )
PrivkeyPart: 5HygE4hG9RyhkMaPaAwBmjkdCZRfkBaZ6v22KEPJ4J1wUNQrxjQ

Address: 125456Ai5XGtPUm3niWm55PKf3v1ipHRwe (Balance: )
PrivkeyPart: 5Kc3uWr3rohi7WEaaQAh21NiFhNhSu7Xecud6qaQvLTRSk4ZKX

Are you sure you didn't mean this one?
Address: 123456CiVHLwwGfzgGyoK44g72uXSVaghs (Balance: )
PrivkeyPart: 5J77zgxcA5VmAxwL5DBonDXbZ3B2DRuhx98uQWHWCHGAuq326DZ

7 characters is too long for this giveaway.

Address: 1TTips7Pze3MQFg39pyZJX7CsNLt4uMSZ (Balance: )
PrivkeyPart: 5KFWa7dx4VkQghKJRZxekzxZMWUJJfbtiGhxSWQdYuYHqTaFZJ9

That's up to your preference. Blockchain.info can do it, and I'm sure many more can too.

Now we're talking
Address: 1JustDgVhsDZRdXqY4nfWSGNrw4SFp7Jvf
PrivkeyPart: 5KSetJinUC6ezgBgwuuv1PrYTz3J1sRRtGkwKKfm9cogAQ7djFA

#1
Address: 1tRAdERkvpZYqKsivSektWLXVvGNQwwxz (Balance: )
PrivkeyPart: 5JTvTjLGgQyyNaUYvXcgUs7eYgcJWGXrtoy9Kgz35uMutNNzotY
#2
Address: 1tRAdER4aKLQDU9hKRgBPDMw7787ZXEPB (Balance: )
PrivkeyPart: 5JAq2w88XeqVmnCDYaYvR5pCQ88iy9eWwHH6YJTo8BAvyBkEyKj

This is case sensitive as it is 6 characters. I can't say it looks Pretty as intended though #2 has exactly the same case-distribution.

7 prefixes is too much for a giveaway, case sensitive it can take days. Case insensitive I gave it 30% chance but didn't find it.

Which step? Step 5 or 6?

1ElMoIsEvil would take many years, even case insensitive. 1waszum made me realize 6 digits is too much for a giveaway, but difficulty varies per prefix. I can make you a case insensitive 1waszum quite fast:

Address: 1wASzUMxoj8X8bgqxaWLBLmrHAsSgqhk9 (Balance: )
PrivkeyPart: 5KBitQJGstBfJGcQ2VCtHEpDhxDVBQ9YR7dfrduQxbDNMoELeVc