Go for the block rate wet.
I rent a 2002 PA-44 for $130 dry, but after landing and fueling up, it usually ends up being around $190-215 with fuel costs for an hour of flight. Plus paying for a/c rental and fuel separately is an annoyance. You have to watch power settings more when you gotta worry about paying for fuel.
Youre gonna pay out the *** for twin time no matter how you look at it, just make sure you go out and enjoy your time while flying it!