As far as the TC goes, the remans that Advance (and likely others) sell have good reviews. I’ve got a stock staller sitting in the box waiting for my car’s 700R4 to fail so I can do it all at once, but that has yet to happen, and it only really malfunctions when it’s fairly cold one day and warms up 20-30* the next so it’s not worth it to pull the transmission just for that. I wanna say I paid around $70 for it, and it shipped free.
If you don’t have concerns about the shelf life of one them, I’d consider letting it go for what I paid. The box hasn’t even been opened, and it’s kinda in my way.