Just off the top of my head if you take the +56 offset wheel you need an adapter that will leave you with +6 offset. If you do the math 50 (excess offset) divide by 25.4 you need a 1.96" thick adapter. Since you are not looking to get the widest possible wheel you can on your car the 2" adapter will probably work on the rear.
The 8.5" wheel on the front is probably going to give you problems and you'll need to modify your inner fender wells or run without them. I don't think you will find anyone running an 8.5" wheel in all the posts in the sticky threads on what wheels and tires work, a lot of 8" though.
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