ive heard by many the 3.3s are too weak to handle abuse.

welcome to the hobby, OFNA is a great brand, and the force .28 are known work horses. if you cant get the motor very hot to the touch, put some aluminium foil on the head.

i ran a couple days ago at -3F and did just fine

stock servos are terrible, you can replace them at hobbypartz, i just got a coreless, digital, metal one and its just stupid fast for $15. i would suggest running high torque as both servos, for well known brand stuff, hitecs are great all around, speed is decent, smoothness is buttery, and they are bullet proof.