20c or 30c 5000mah lipo for 9t ezrun?

[Royal Male]

Hi People,

I'm in the process of ordering some lipos for my 9t ezrun (35A esc) from Hobby King. Its for a 1/10th 2 wheel drive short course that is very light (ansmann core)....mostly bashing but wouldn't rule out racing in the future. Think Im going for Zippy flight max or Turnigy......but not sure to go for 20c or 30c? Am I right in thinking the 20c might get the temps up a bit high??

Any advice/knowledge always appreciated

cheers