The only component on a DP that will want some routine monthly operating time is the generator. The reason to run it under load is to keep the electric generation part dried out and working. Many generators, however, are not started routinely and still seem to do their job when called upon.
If a gas rig, put some storage treatment in the gas tank before your last trip to park the rig.
Your tires may last longer if rolling frequently as that seems to reduce the effects of the stored tire aging process. If three months sitting for part of the years is your plan, then you will be ahead of those DP owners whose rig sits for 6 months.....