Wrong. Stay away from T7 and a PRB. Some say you can use a wad between the patch and powder to keep the patch from buring. That IMO is more $$ you have to spend and more time in the field to reload.
Goex or pyrodex when shooting PRB.

Who makes the hawken you are buying?

Ive found that a .018 Pillow Ticking patch loads easier and offers better groups than a .015 TC patch.

I'll leave everything else on your list for someone else to answer

As for cleaning, When its gets tough to load the next round is when i'll call a break and swab clean. My deer creek .45 shoots better the more i shoot it on a dirty bore.