MM-
I am not familiar with Bigelow; strenuously or geographically. If Bigelow is a 1-day climb and is in the same area, I think it is quite doable to nail all 3 in 2 days. Hoodoo/Libby is not that strenous.
We didn't see a single person the whole time on Hoodoo/Libby. It was great. Bring bug spray, the mesquitos at the lake are terrible. The trailhead can be tricky to find, make sure you have good directions or you might get lost.
Have fun.