in a 100% premine proof of stake coin - does autogenerate need to be set true or not for transactions to be confirmed?

not giving away the USP here. Just want to know if there's any reason I can't sell the coin online. I don't want to hide behind exchanges.

this would not be a presale. it would be an ongoing sale.

If I create an amazing new coin with great USP and premine it all, can I sell it on my website or is it illegal in some way? I've not discovered any sites doing this and I'm wondering why. All sales would be made with BTC.