Question: Should I hold full aileron deflection while adusting the rudder, elevator, and throttle or do I need to adjust the ailerons as well? Right now, I'm adjusting the ailerons because other wise my roll is too fast, but it's a handfull.

you are on the right track, keep your rotation slower so your thumbs and servos can keep up, I stay on high rate aileron and am comfortable with about 1/2 aileron stick. I like to keep some aileron in reserve to escape disaster. For me it is actually easier to do rolling harriers into a steady wind. the wind will hold up your airplane, in effect slowing down the realism making it much easier (like reducing real time on sim) fly regular down wind untill you get better - this can be hairy. good luck