Some dealers will also swap shims, maybe for a nominal fee. Worth asking.
In your situation, it might be better to do the minimum necessary to keep the bike operable. But, the work you are describing are all mostly labor, with only a few parts. So if you have the time, it's better than watch TV. If you go methodically, I don't really see anything major that could go wrong. If you do decide to go for it, might also consider adding throttle body balancing after the valve check.
'18 Ninja 1000, '18 Street Triple R, '18 KLX250S, '15 250XCF-W, '14 K1600GT, '05 GSXR600 (track)