Thanks for the replys. Sounds like we should stay overnight and take our time to enjoy the scenery.
Yes you should, but you can still have an absolute blast and put on lots of miles. I like to ride about 260-290 miles a day in the UP. You might consider something like this:
Day 1: St Germain -> Watersmeet -> Marinesco -> Bergland -> White Pine (Konteka) -> Ontonagon -> Greenland -> Hancock -> Dollar Bay -> Copper Harbor.
Spend the night at
The Mariner North
Day 2: Copper Harbor -> Gay -> Dollar Bay -> Chassell -> Baraga -> Sidnaw -> Kenton -> Watersmeet -> St Germain
Day 1 would be about 250-270 miles and very doable yet also riding some nice trails. Day 2 would require Portage Lake to be frozen as I would jump on the lake just outside Dollar Bay and ride the lake to Chassell. The trails from Baraga to Watersmeet are some of the best in the Yooper. If Portage Lake isn't safe when you plan to ride, then simply ride down to Twin Lakes and take trail 109 and then trail 8/15 to Sidnaw (which is also a good trail).
Lastly, don't forget about the timezone change.