I was out racing a Solo II event this morning and I seemed to have destroyed my tires

I chunked the front right tire and it is now showing the cords. The other tires are in a little better shape, but they are pretty bald.
I asked a fellow Subaru owner where a good place would be to buy tires in this area and he told me that he had a set of Yokohama ES 100s that he used on the street for about five months and they have one or two auto crosses on them. He said that he needs to get rid of them because the wife is bitching about him have two sets of R-compound tires and the Yokohamas at his house. The size is 235/45/17. My current tire size is 215/45/17 on a 17x7 rim. I have 5zigen progressive lowering springs that give my car a 1.5 inch drop (they came on the car).
Will these tires fit without having to roll my fenders or causing any other problems?
I've heard that these tires are pretty good for my application, which is daily driving and auto crossing. Are these tires worth the $200 that he's asking?