friend wants to start RC what to buy?

[t-maxxracer32]

alright well if i decide to drop in a gas engine ill try that one out.

if i were to stick with BL what battery would get me the best runtime with a 4s setup spending around 2-300?

i figure i could buy 2 dewalt packs making 2 5s2p setups and that would give me some good runtimes correct? around 30 minutes (15 min each)

or i could get a 5ah evo 30 and how long would that give me?

the a123s would be nice IMO because of the quick charge time.

if i had a dc-ac power converter in my truck could i run my PS and charger in the truck?

thanks!