cool thing about half ton GM parts is you can get them for cheap or free. i got my 10bolt and 12 bolt for 50 bucks (pair) all i had to do was regear them and put some locking hubs on. so i probably have about 600 bucksish into my fullwidth conversion axles, gears, steel for front crossmember, steering and a conversion flange for the rearend to run toyota ujoints and i made my own flange for the front since i didnt care about balance (can still get up to about 50mph with a square shaft and welded toyota flange to 10 bolt yoke lol). werks guuuuud.
But hey if you wana go toyota thats cool. sometimes its nicer to stay that way since parts match better. but just giving you other options to explore. Just cuz its a toyota dont mean you gotta keep it toyota