Snowplowing Questions

[THI]

I have a 1978 GMC K25 that originally came from Arizonia and is now in Michigan. It was not treated well in it's previous life so I currently have it in pieces and have been debating selling it or turning it into a farm truck for my second home where I have 55 acres mainly wooded.

When I say it was not treated well, the original engine was long gone and replaced with a 1972 400 SBC that had one 1972 400 head (cracked) and one 1973 350 head (not cracked but missing steam holes). The crank was a 1974 400 crank that had chunks missing from the counterweights and was ground .020 under. The block was okay and got snatched up before I had any idea on where to use it, the rest went on a scrap pile. The trans was a junkyard TH400 that had a cracked housing and the NP203 also had a cracked housing. From previous projects I have a good TH400/NP241 out of a 1989 K20 Suburban and both have a fresh rebuild. The K25 has 3.73 gears and I have a Dana 60 with 3.73 gears and a Trac-Loc that I can replace the Dana 44 that is on it.

If I put the truck back together to use as a farm truck, I will also need it for plowing out the driveway and outbuildings. I would not be plowing out any other properties besides my own. I have two questions:

It currently has the factory 2-leaf spring up front, should I replace that with the 3-leaf or 4-leaf replacement springs?

I have a 1969 327 bored .030 over with flat-top pistons, Dart Iron Eagle SS heads (9:1 compression) and a Summit 1102 RV cam (204/214). Would be enough engine to plow the equivalent of a quarter mile of driveway, or should I consider something larger?

Thanks.