If you enjoy playing the LE / Premium models, thats fine, but don't expect them to earn much more at all. Casuals don't care for the most part. I'd mostly argue against putting those models on location because it is highly likely they will break more often. Iron Maiden Premium in particular can be very fussy with the lift ramp and the captive ball lock mech.
Only 4 games will be tough to draw regular league nights. If you want pinheads to keep coming over and over, it is best to rotate a new game in every 3 months or so.
