he needs both wheel spacers and coil spacers if he doesn't want to rub. and yes, just suck it up, get everything and do it right. if you are under such a tight budget (or just cheap as hell) that you cannot even afford wheel/coil spacers, then you shouldn't be lifting it to begin with.
i spent about $800 on my 4" kit and ride quality sucks. most people spend over $2000 to make the ride quality close to stock again. you are looking at spending $200-300. if you cannot afford the barest of the barest minimum, then you probably shouldn't go down this path. and you should've probably researched before you got the 30" tires.
instead of doing 2" bb, you can fit a 30" with 3/4" coil spacers. i ran .75" spacers with 30" tires (i thought my ride was stock until i took it apart to lift it. the coil spacer in there was so old that it blended in with everything around it). however, you will still rub when you turn. you'll need wheel spacers to correct that. spidertrax is the most popular brand. contact email@example.com
for the best prices. i did my research and i can guarantee that no one can beat his price.
k. just to conclude, here is what you need:
4x 3/4" BB Coil Spacers
4x 1.25" Spidertrax Wheel Spacers
and you should be able to run 30x9.5 without rubs. kolak should be able to get you everything in one package.