Driveshaft is a great choice. Instead of the rugged Ridge sye though I would suggest the JB conversion super short syeSo, as a start would the Tom woods Rear Drive Shaft, Double Cardan and Rugged Ridge NP231 Transfer Case Slip Yoke Eliminator work well? I feel like I can do these two upgrades first then work on some of the other stuff for the TT.
Tom woods: https://4xshaft.com/products/tj-rear-drive-shaft-cv?rq=mk_jeep~md_wrangler-tj-lj~yr_1997-2006
SYE:https://www.extremeterrain.com/rugged-ridge-heavy-kit-jk-tj-yj-186766.html