suspension setup will be a bigger issue than offset when running 17" wheels on the wagon.
But if you're wanting higher offset wheels... SSR seems to be the only ones over +48 at the moment.
Comps & GT2's are both +50 - neither come in bronze.
I've successfully run 17x8" +48 wheels on an '03 wagon without issue, but my suspension wasn't stock or just some springs.
With only prodrive springs & swaybars I ran 17x7.5" +48 Rotas with 225/45-17 tires.
Lots of options. Figure out what you're going to do for suspension before you worry about what wheels fit.