If you need surgery get it ASAP. You won't be able to snowboard for about six months after surgery so get it done now so you can be ready for next season.
Thanks for responses. Planning on doing surgery, but the docs just wanted to wait to let my knee's swelling/bruising go down a bit so upcoming visit is for them to assess it better.
And yeah I'm concerned about packing on the poundage too--joints already have it hard enough.