I suggest you can announce asset on NXT platform for IPO.
I think btt is better.
While nxt AE is cool, we will go the standard way and do the distribution with regular / escrow BTC wallets, and spread Crypti to shareholders according to their % and date of investment.
Is there any limit on investment for shareholders, e.g. for EXO, everyone just can invest 0.05--1.5BTC