Just a few quick questions that I didn't quite understand from the FAQ

Getting directly to the point.

First off the workout: So for the main lifts (deadlift,OHP,Bench,Squat,Chins) I do a set of max reps around 5 then lose -10% and do another set of +1 reps, then another set of original weight -20%/+2 reps, right?

About the cut/bulk/recomp thing: I am at about 15% fat, so I am kinda-ish happy with where I am and I mainly want to cut a bit of fat while not losing muscle or even gaining. This means I should do +20% cal on work days, -20% or rest days, right?

Lastly, a quick question about creatine. I have never taken creatine, but am looking to try, does it matter which brand I chose or not?