keep it stock!...
If your not going to "wheel" it,why make it a "Monster truck"??...it will be more road friendly and ride better not lifted,parts will not wear out as fast,and the truck will be WORTH more as a restored original,than it ever would be if it were modified..plus you won't have a hassle getting it inspected,or pulled over every time a cop goes by...call me a purist,but I think lifted trucks ruin the resale value,cause lots of headaches,and rarely are better than a stock truck for "on road" use..
When I bought my 74 K20,it had 36" tires,a butchered set of front springs from some other truck that didn't fit right or belong on a GM,and it rode like a dump truck with dead axles!..

..I thought it looked "cool",but in reality,all that lift kit crap did was ruin the ride,the handling-(couldn't take turns for crap!)-and its height made it difficult to load stuff in the bed!..
I ditched the front springs,and put 3 leaf stock ones back in..traded the tires and rims to a friend for 4 "normal" ones,and 2 nice chrome bumpers,and removed the lift blocks from the rear..it now looked "normal",my inspection station gave it a sticker with NO trouble (and the guy said not to bother bringing it there with the 36" tires and lift!)..it now rode nice and smooth,not humming like an airplane,and vibrating and shaking like it did before--now I could use my plow on it,and I kept it 16 years,before it rotted into dust..
I say make it a nice restored original,if its in "not bad" shape..if it were a rotbox,I'd say lift it and beat it--but I hate seeing nice trucks in decent original condition get "monsterized"...
