Iaapa is in November (Great right after our season ends)
Transworld Middle of March is perfect (this is really the main show and the sooner vendors get to new cash flow and haunters get to making new scenes teh better)
Hauntcon - Should be no more than 4 to 6 weeks after TW. So End of April is great.
MHC - Seems like they want this show where it is so I guess it won't change even though their show is never going to take off unless they change it. However I would say end of May beginning of Summer or rather the weekend before Memorial day.
Midwest - 3rd week of June or two weeks before the 4th.
Then be done with all these things and focus on building haunted houses.