Congrats.
Changing the FSU was my first big job too. It took me a while as well. I stumbled upon a couple of problems with old rusted bolts breaking and what not. I didnt haave to spent money on tools since I just borrowed what i didnt have from friends but I ended up getting new fuel lines and what not. I too found out I had 1/2 tank. It was such a twist. But yeah, i think it paided off considering how I know how much gas I have now.