Yes, adding both a 2FA and email verfication is possible (i've seen other clients do this), however not sure how important that is for a botting client. As, the internal security that OSBOT has already implemented in the current client is sufficent enough (I've used OSBOT since 2013 and never had any issues with my accounts).
Also, check out the perks and benefits for VIP here (your question is answered there):