We're both still working but by taking advantage of our flex schedules we mostly can do 3-4 day weekends and mostly they are in Michigan State Parks.
An exception this year and last is the FROG Rally in Goshen , IN for 6 nights. Over all we try to do 40-50 nights per year.
By the way, we especially like fall camping at Sleepy Hollow SP which is pretty close to you. We made frequent use of that CG when the kids were at State.
We've pretty much figured out that the best we can comfortably do is start the last weekend in Mar and finish up the first weekend in Nov. At least that way we can tell people that camp 9 month out of the year in MI. (not bad IMHO)
Given the year we've been having we're probably going to start the first weekend in Apr this year assuming we can get the camper out from behind the snow bank by then.
But I can tell you that we really burn through the gas trying to keep to our early spring-Late fall camping plan.
If you want to brave the other 3 months of the year, I recommend electric blankets and extra space heaters and don't for get the extra extension cords. Space heaters will use up your 30 amps pretty quick.
Cathy & Jeff
2013 Sabre 32RCTS / 2012 Ram2500 Hemi
Nights Camped: 2015-140; 2016-137 YTD; 160 Planned