I'd probably do the dana with your future plans. Might as well just get it done with. The dana and the welder will cost you less than a diamond and longs... I'd just run the tires switching all the time at that size is a pain in the ass and they'll probably rot before you wear them out if you did. If those are your plans I would just break down and drop the cash on some good tools first. My personal must haves past the basics are a good jack, good engine stand, good engine lift, compressor with air tools, welder, tube bender/notcher,and plasma cutter in that order. It makes this stuff so much easier. I've got everything but the plasma cutter and its killing me. I used to have a friend that built plasma cnc machines and another with a plasma cutter but the first moved and the second doesn't have it anymore. After grinding spring perches for what seemed like eternity its now the next thing I buy.