Brian,
Just suggestions here, but there are going to be a few places where you need three or more hands or unnaturally long arms. BTW, I back-riveted everything I could manage, even using the little tungsten bars. I felt like I got better results on the appearance.
1. I see you live near Portland. The highest density of RV builders on the planet live near you. Reach out through VAF or EAA. RV builders are easily entertained by mundane and repetitive tasks and many subsist primarily on beer. Two things you can easily supply.
2. Family, friends, neighbors, significant others will cherish the self-esteem and personal pride that comes from a shop head well-formed. Riveting/bucking are very under-appreciated life skills IMHO.
3. Any available teenager? Convince them the dimensions and increased weight of a back rivet plate will give them the hand strength and dexterity to allow for some truly marathon Call of Duty sessions. They’ll be invincible.
Anyway...you’ll need help down the line and it’s nice to have another set of eyes on things sometimes, as you probably already know as a pilot.