for the front, either 16 or 17" diameter are good. 8" wide works with clearance on all sides. (zero offset)
8.5" is about the max you can go, with +10 to +12 offset and still clear. If you plan to remove the inner splash guard and roll the fender lip then you may be able to squeeze a 9 inch wide wheel up front.
The back can hold closer to 9.5" wide wheel with +10 to +20 offset approx.
As for tire outside diameter size, the stock is 205/60/15. You can use one of many online tire calculators to find a suitable 17" tire to match or be close enough. 245 width is no problem. That is pretty narrow.
There are many options for 3-piece wheels which cost around $500-600 per wheel. Otherwise, much cheaper options are Sportmax 002 16x8, or Rota RB come in 17 and 16". The 17's are available in 8" wide and wider, while the 16's are 8" or more narrow.