Nice score. I really like those Deore II components, picked up another cheap 89-ish taiwanese mountain bike just for that group recently. I also just picked up an earlier apex (like yours and the other blue / sea green one shown) for the early XT Deerhead components, but I may end up keeping it together since it seems like a very nice bike.

I'm beginning to have too many vintage mountain bikes, but it's hard to pass them up when they're so cheap in southern california (where you can easily find them for less than a low-end hi-ten bike boom road bike). At least they're good platforms for setting up in different configurations, so they don't all look and ride the same