Losi 5T owners who converted to elect...questions

[magman]

First I am about to buy a used 5T and it will be converted....my questions are...

1. how is the performance of the castle system. 8s seems to be a little underpowered to me, but haven't seen on in person. MGM has a bigger esc to run a 10S setup which I feel would be perfect, but OUCH, the price

2. what gearing are you guys using?

3. Using a 8s setup, dual batts, wondering how high the C rating on the batts I should use...was thinking of 35C minimum and going to use quality batts such as Neu, GensAce, etc...

4. Diff fluids