I sorta figured that you'd wanna build "Mistress". I'm a HUGE fan of "Wrecked" and it's mostly responsible for getting me back into heavy truck models. I'd recommend Plaskit's KW T-800 cab conversion for it and the RoG Pete wrecker for the chassis, just to save your self all the work required to build a quad axle chassis. IIRC, Mistress is a Miller Industries 60 or 70 ton rotator and you're on your own for that. The RoG Pete wrecker might be close enough to work but good luck finding one for a decent price.
Me? I wanna build a NRC 80 ton sliding rotator, probably on a Western Star 6900HD 5 axle twin steer chassis.
FWIW, both NRC and Plaskit are within an hour's drive of home for me.