Not a fan of that at all, especially for a first cycle. You don't need more than 50mg of anavar and no more than 6 weeks max. If you feel like you need 100mg then you are better to switch to a more powerful compound. Anavar is mild and you should have proper expectations. First cycle, I like...
Donating every couple months is usually a good timing. No need to do more often. Our clinics here actually won't let you donate if it has been less than 8 weeks since last one, just to be safe.
Sounds like a good stack to me. Give it a try with the higher reps and see how you like it. The nice thing is that you can easily adjust training on the fly if you want to switch it up.
I wouldn't bother with masteron at your body fat. Yes, you are very lean, but mast shines best when you are 10% or less. It is really just a cosmetic hardener.
Nourishing your body comes from nutrition. You should be taking N2Guard year round anyways. As far as a faster recovery from surgery, let us know more specifics about what is being done.