As was mentioned by Rokomis, your best bet is probably to start with a megasquirt and get the car running reliably on that n/a. At that point, you can pretty inexpensively start to acquire parts to put together a DIY setup. It's a bit overwhelming to think about piecing it together yourself, but there is a TON of info here, and if you're not in an absolutely huge rush, you can likely do it for a pretty reasonable budget.
You'll end up with a better system, and learn a lot more by the time you're done, which will make doing upgrades and whatnot a lot simpler in the future.
That said, if you ARE impatient and want the kit, that one will do what you want, but you definitely will need to add an IC if you want more power. If you have the ability to measure, draw lines with a sharpie, and use a hacksaw, somehting like this will save you a buttload of $ over adding the IC option to the begi kit:
Up to you, but if you can take things a little slower and start with MS, then DIY a turbo, I think you'll be happier over the long haul and end up spending less money total.
Welcome and good luck either way, though.