I contemplated this issue as well during my build.
Struggled with it for several years.
Ended up not tubing for the same reasons you are struggling with.
In my case not enough readily available cash flow and too many additional things to change out or convert and too many pricy variables.
This site is like an addiction to spend more and pump it up. " I like it"
I had already purchased the Hotchkis rear leaf springs and Blistein shocks, stainless fuel tank, ext...
If I ever want to go the tub direction I can always take it to the next level.
Until then, I'm good for now.
Bottom line, It's your ride. Do what will make you happy.