It sounds to me like you have the perfect SMB fishery. The cool (but not cold water) and streams make it sound perfect. I assume your not particularly interested in a panfish, since you originaly wanted trout. You also must have a native population of baitfish (which I would be very interested in hearing more about). You should be able, assuming you get some yearly reproduction if small, to grow trophy smallies. True they aren't very competative against LMB and BG but try landing a 5lb one on a fly rod! They actualy have crayfish patterns designed for SMB.
BTW, sounds like you have a slice of heaven, if you need someone to inherit it, I would make the sacrifice and move to NY.
