cost of electrics for new starter

[dougher]

HI, firstly, sorry for asking questions that's probably been asked a million times before...

1. Batteries, 25c competitive? One really enough?
2. Core 50 charger OK? Read some reliable issues on it. Alternatives?
3. How much to spend on ESC (BL)? Had recent advice that this is important to spend as much as possible
4. 8.5t BL motor been advised, any recommended motors specifically?

I'm a returning racer, but had nearly 15 years out! I'll be dragging out my losi xx kicking and screaming until it breaks, then go for 210 or sv2...

Any advice welcome :-)

Sam