I just did this same trip from Palm Harbor FL. My family and I set off on the last week of May and into the first week of June. Unfortunately many of the Colorado trails we wanted to do were pretty well closed. This was a rookie mistake and not realizing late June and July are when these trails typically open. I live in Florida what do you expect. I did do the Switzerland trail but we had to post pone Imogene Pass for the next trip out there.
Here are some links:
This was my post here. There is some great information here that may help
And are you still married?
www.overlandbound.com
Conditions update link
Conditions and closures of roads across the county, including High Mountain 4 x 4 passes.
www.sanmiguelcountyco.gov
Look up the books put out by FUNTREKS such as Colorado Backroads and 4 Wheel-Drive Trails. These were a great help with navigation.
I hope some of this will help.
Enjoy it and like someone told me, BE FLEXIBLE with your trip