The first thing i need to ask is how long does it take before it gets on plane with full wells? Depending on how long it takes you may not have a problem at all. The boat will be slower to plane will full wells for sure, id say it it takes like 6 seconds or less to break over your in good shape.
There are some things you can play with for free like the pvs plugs and weight. Try taking one out or more and see what it gives you, also get some of the smaller sizes and play with smaller ones too(they are very cheap). Also try moving some weight into the forward compartments if most of your weight is twords the rear your holeshot will suffer, just play with moving stuff around until you find the right balance.
I have a z7 which is the same basic hull with a 175 pro xs on it. I also have a 6" jackplate and run a 24 tempest on mine, the prop shaft is currently 3" below the pad. It has no problem at all getting out of the hole wether the wells are full, empty, full gas, two guys whatever. It takes less then 5 seconds with two guys and a full well.