Sounds like everyone's got you off to a good start! I'd like to add a couple comments, though.
You don't need a welder for the engine swap, but it will make things easier. Also, as long as you don't let the 'while I'm at it' bug get you too bad, you won't need a whole lot of shop/ storage space.
To qualify those statements, let me say I converted my 79 ZX in about a year with a socket set, 8 metric wrenches, 5 standard wrenches, a drill, sawz-all (borrowed), cherry picker and engine stand, 13" jack and two jack stands. I bought the cherry picker, but I could have just as easily borrowed one from one of my shop teachers (he's a datsun nut ) and the engine stand isn't really needed, I found it in my grandpa's shed. My shop space was a single stall garage with shelves on either side and a KX125 in back. When I started out I knew nothing about cars, so anything is possible.