just to make 100% sure... if you have coins on bittrex right now then you need to send them to someone right now or can you await the new functioning coin and then do the swap after this point?
Just my opinion but coding in a dev tax or retaining 10 % is going to be essential to the furtherment of this project for updating, fixing, marketing.
Of course it's up to everyone else to speak up on that matter but it is nice just to have some coins there for payment to a dev if things going wrong or bugs come up or we just want an improvement.