1 - Rota wheels are not low quality, and in my opinion for the $$ are great rims.
2 - Try to find a set in your local area used 1st, and there are a lot of subies in your area to find a nice used set. New you don't need to spend more than a $1000 w/tires.
3 - 215/18/40 is what I would run, but some will run 225's but if you are lower than stock or plan to, you may have to roll your fender wall.
Hope that help's and don't forget...Wagons rule!