My father son C10 build

[Bucky10pt]

Slowly piecing a C10/C20 factory utility bed, camper package together for my sons first vehicle. He's 15 what better project. Did 68 chrysler imperial for my oldest first ride. This is a 67 C20 frame/ 67 factory utility bed, step side box with utility sides, pretty cool. Guy I bought it from took cab and front clip off it. Looking for suggestions;
1) convert to C10 running gear which I have complete frame has rust on rear crossmembers from 72 C10. 373 posi rear, disc front to lug with new tires and good rims or
2) keep 8 lug and do disc swap on front.

Plan on lowering and have stuff for 5.3 ls swap 4l60 transmission. Have 2" lowering Springs.
Cab I have needs bottom, looking for better one now.
Any suggestions please chime in thanks
Trying to upload photos but says security key issues?