I'm in the same boat as the OP. I'm a college kid and have nowhere near the build budgets of some people on this board. I'd love a screaming twins setup and supporting mods, but just don't have the money now.
I'd love to write a blank check and have my truck transformed overnight into what I want, but the best way to go about it is to build it slowly. I plan on getting another engine and trans core and building them over time. Save a little money, send the block to be machined, save a little more, buy injectors, then maybe studs, turbo, etc. When you're done building it swap it in. If you break something you have the old engine and trans as a backup.
It might take longer, but the damage to the wallet and truck down time wouldn't be as bad. If you want deals you can't find them quickly, you gotta wait. That $1000 turbo you want might turn up somewhere for $400.
I know the feeling, good luck with your build.