The rake will come from your wheels and tires, the 5/7 would ordinarily level the suspension out.
The 20x10 should fit a long a the backspacing is right. It's be a good idea to test fit the wheels first, you'll be able to tell if it'll clear. I'd imagine the must you'd have to do is roll the lip if it doesn't clear at first. Anything beyond that and I'd get a different wheel.