Fair enough. yea, if you're just looking to get it running to sell it, then do it the cheapest way possible.
I know money can be tight, and if it was mine that I planned on keeping, I'd rather wait a little longer to get it running, and use the newer, more powerful engine.
if I was keeping the truck, a year after the swap was done, I'd really be kicking myself for NOT going with the Magnum engine.
Good luck with your project, hope you get it all worked out!