I feel your pain as I switched to wide fives before my trip to the LA Father's Day Roadster show in '16 for my avatar. I went through about a dozen or more to find ones worthy enough to then be straightened. I then had five I sent off to a wheel shop that had the machine that then straightened the wheel lips and made them run out perfectly. I know you are in NH - mine were done on LI. Cost $50/wheel.
I then used dynabeads for balancing and I run tubeless radials. The biggest mistake most make is that you must use an old style tire mounting machine - the newer "finger" style machines may/will distort these rims by grabbing the outer lip of the rim. I have seen it happen.
So, between finding suitable rims, paying for the straightening, the dynabeads and the special valves, the tires and caps, I have a LOT of money invested but I love the look and they run smooth. If you want to play, ya gotta pay. I did the same thing with the mid-30s Plymouth artillery wheels I am using on my present 5-window hot rod project.
But, I really do love the look ....