I'm with Hipster on this 1...it'll work, but not the way I'd go about it. I'm on the other end of the spectrum. Deal mostly with higher end street rod/custom stuff. With as much time put into some of these builds an extra few hours with a welder/grinder makes for a better longer lasting fix. With the cost of materials (primers, basecoats, & clears) only going up I don't want 2 take the chance.
I do some resto stuff but mostly been collision. Paid on commission so I hear ya.
Re-do's and come backs cost you three times. The first time, labor and materials, the second time labor and materials, the third time the job you could have been doing instead of the come-back.
Some basecoat colors are in excess of $150 a quart plus about $100 a quart for a decent clear. If you have to do it a second time you would have saved money not taken on the job, set on the couch doing nothing and still had money left over for a T-bone and a 6 pack.
So if some thing bites me on the rear I never use it again.
After you show the Fusor rep the prep was done properly the next thing he was trained to say is " You used stale dated product" I didn't do the job in question but I didn't think he was going to make it out of the shop under his own power that day! lol