Get me up to date! Need info please

[Rivermaxx]

It's been a while since I've been on here. I have a t-maxx with hardcore titanium chassis I have left over from all my builds. I want to convert it to bash and have some fun. Want to run a traxxas 1515 2200kv motor on 4s or 5s but not sure what esc to run. Already have the adapter for the summit 2 speed trans I'm going to use. Have 2 one piece batt trays coming. Looking at the new traxxas and castle escs. What's the latest? I've used the castle mmmv3 and still have one. The new versions different? I read something about them being locked and notice they have an extra capuciter pack on them. Should I put one of those on my mmm? Also recommend me some good set of lipos 4s or 5s that won't break the bank. I also have a ofna hyper 7 I am almost done converting too. Get me up to date guys. Lol why that pic is upside down beats me.