Ewww... those are terrible sizes. I'm assuming your still fourlug, so I recommend running the 17x9+20 all around. IMO, this is the PERFECT wheel size for beginners.
Tire size can vary depending on how much work you want to put on. You sound like you're new to wheel/tire fitment, so I'd say use 235/40/17 all around.
I'm at work now or else I'd post some pics. Sorry. Let me know if you got more questions.
Edit: Ha! I found a pic for you that my work servers didn't block! It was super easy to find... just googled 'FN01RC S13'. This is the 17x9+20 with 235/40 all around.
Doesn't get any better than that, my friend! It's a great combo. You can even fit 255/40/17 tires on those wheels depending on how long you are and how much fender work you wanna do...