So far the snowpack is looking pretty impressive. I wouldn't expect to be able to go over 8000 foot or so on eastern slopes by the end of May. As Mentioned, the Wedge area has a lot of opportunity to explore in that area, possibly run out to the dinosaur quarry area north of the Wedge and check out the bones. 9 mile is well worth the drive. I think the old MK tunnels are all closed off now as are many of the mines. They used to be quite interesting. Much of the old mining equipment that used to be scattered all across the swell area and was quite interesting to check out has been removed over the years, but it's still fun to search. Remember many of those mines were Uranium mines so if you can get into them, there is a high possibility of high Radon gas content.
Especially if you'll be heading south of I-70 in the Swell, travel in a group, have a satellite communicator, or at the very least let someone know where you're going and when you'll return. Cell phones don't work in most of that area, and while it's getting far more crowded with off road vehicles now than it used to be, you can still find yourself in areas where you're not likely to see another person for days should you break down. Having water and the means to stay warm are a must. It's hard not to have a blast in that area.