Sure. I live in the Northwest and there are a few Forester’s and Legacy’s up here raised. I believe Rallitek has done quite a few of them so may be contact them for options.
if i where you id check out subaruforester.org they have alot off offroading info. your not going to be able to fit 33" tires. they do make offroad tires down to 28".
Yes it is but General Tire make the Grabber AT2 in sizes that will fit without a lift.