Dunno, as I mentioned, I dont really see the need for any expense at all for drying but that prerogative is yours of course.
You will require that type of set up, fans and carbon filter in the grow room anyway. If you have these, then you should really be looking at the best way to incorporate into two spaces if that is what you are doing. (as oppose to using the original grow room) It shouldn't affect any perpetual harvest as next batches would be in veg and you would only take a few days to dry enough for curing.