Basically you need to decide, do you want better brakes and a setup that looks and performs like "factory" or do you just want to get the 5 lug wheels put on the car any way you can. Then you can determine the way to go.
Swapping the parts is not that hard. You can do it all with just replacing the parts and using fittings instead of new brake lines. All the parts are basically direct fits, with the exception of the SN95 booster if you decide to use it instead of the Fox one.
The 5 lug conversion was my first modification on my car, and while it did take some time to get it all together, it was not a bad install. Took me a weekend for the fronts with a complete steering replacement and struts and the brake parts, and a weekend for the rear disc setup.
READ Matt's website Mavrick posted above and there are several others that outline the steps in the conversion. Read it until you memorize it and it will be easy to do! LOL!
As far as the MPS "kits", the 99+ base model dual piston calipers can be found at salvage yards all around starting at less than $20 each through
www.car-part.com ! My local yard charges $19.95 plus $5 core, $25-35 for each spindle and hub, and like $10-15 per rotor. I found many yards all over the country with very similar prices. Anyone that wants to take the time to find the parts can easily put together the same basic kit for about half of what MPS is charging. You are paying them for the convenience.
Good luck on whatever you choose to do!