I start my Z950 by pulling the choke knob up completely, then add about 1/5 to 1/3 throttle and it starts about as fast as every EFI I have owned.
I haven't really checked into the puffer seat to be honest. I don't mind adding the 3" to ride height of the factory suspension insert, but I don't think I'd want to go much higher than that. The 3" of the insert would put the curve on my sticks at the perfect height for me. I have them down as far as they will go and they are still too high. Deere must have had their heads buried in the ol' brown applesauce when they designed their sticks because I ain't exactly short, but these things come set so that they feel like ape hangers on a chopper.