Help with HB Lightning Stadium Pro?

[gramey]

I bought a Hot Bodies Lightning Stadium Pro (RTR) today and while I know many will say that I should have bought a HoBao Hyper ST or HPI Hellfire (two others that I really considered) or something else, the deed is done.

What I need to know now is what breaks on these, what will I need to upgrade when funds allow?

I replaced the stock steering servo with a Hitec 645MG, not the quickest but hopefully o.k., I don't think the stock HB 26 engine is the quickest out there either but I thought I'd run it at least until I get used to the handling and setting up.

I'm assuming if I wanted to race this (there's probably some laughing going on now!) I'd need a 21 engine, but which gives the best bang for the bucks and won't break the bank?
Any constructive comments appreciated peeps........