Slim fan will just let you have two fans instead of just one. because I can bet you that you're going to have to pull one out for clearence.
That's a pretty decent price for that intercooler kit, however it's a universal kit, so you're going to have to cut and peice together your own piping out of that. Plus, the BOV isn't really all that great of quality, but hell, if you want it get it! I was running a similar eBay turbokit for awhile too. I just upgraded certain parts along the way.
Just buy that kit, and then buy a TiAL 38mm external wastegate. trust me, the extra money spent on a TiAL wastegate will be worth it in the end. And then a good oil feed / return oil line kit.