1. I send 0.04BTC to ChipMixer and after this I will have two Chips, a 0.032BTC chip and a 0.008BTC chip. Then I export the both private keys of the chips.
2. Now I would import this both private keys into Electrum about this way: File->New/Restore->create a wallet->Import Bitcoin addresses or private keys->import the both private keys->set password->Finish (? ? ?)
3. After this I go to "Send" and fill in the "Pay to" my online wallet address, in "Amount" I fill all my BTC (without the fees that I calculated). The fees I fill in the fee box and then I press Send. (? ? ?)
Please correct me if any mistake in this process!
That would work.
1. Show Electrum me the exactly size of bytes that I need for this transaction?
Click "Preview", "Sign" and you should see the final transaction size and fee. Then, click "Broadcast" to send the transaction.
2. Is this calculation correct (I calculated with 400 bytes for the transaction and fastest and cheapest transaction fee is currently (I know its change all the time) 380 satoshis/byte)? 400*380=152.000 satoshis -> 0.00152000BTC fees.
Yes. (380 say/byte according to
bitcoinfees.earn.com)
3. I think those are the most important Preferences, they are correct like this?
[Fees] "Use dynamic fees": Check, "Edit fees manually": Check "Propose Replace-By-Fee": Never, "Fee Unit": sat/byte
[Transactions] "Use change addresses": Check, "Use multiple change addresses": Unchecked, "Coin selection": Priority, "Spend only confirmed coins": Unchecked
[Appearance] "Zeros after decimal point": 8, "Base unit": BTC, "Online Block Explorer": Blockchain.info
I would: maybe enable Replace-By-Fee if the fee is too low and disable "Use change addresses" (if you don't want to spend the whole chip at once). But since you want to send with a fee of 380 sat/byte, RBF shouldn't be necessary.
4. Does the size of the bytes change, when I import more private keys? For example I split the 0.032BTC chip in two 0.016BTC chip, and export the private Keys then I would have two 0.016BTC private keys and one 0.008BTC private keys. I think so!
Yes. More chips means more inputs. More inputs/outputs = the heavier the transaction will be in bytes. And as you can see above, more bytes = more satoshis.