"I have no idea how to paint with the translucent paint,"
Then don't even think about trying that, it's a skill that requires the right set up and practice.
You can look at other alternatives like flex face and outsource but the big factor is your clients cheapness.
Printing and overlapping is going to be quickest and cheapest, do you even know if they'd go for that cost?
I am not nor was I going to do paint based on my clients budget and my inability to do so. I choose to do digital based on price and ease of install, he was fine with my quote for printing. I am just looking for advice or alternatives to the overlaping of the digital film.
The sign is very large and the top is probably 30-35ft in the air so maybe a 1/8" overlap is nothing that will show up too much and I'm just worried because it looks more extreme at 12" with the same overlap than 72" and the same overlap