If you upgrade to the bigger bags in the back, you will find that you need an IBS to compensate for the weight. I've got the same boat and it loves weight in the bow. When we fill the 750's in the back for wakeboarding, we put an additional 800 in the bow on top of the IBS. So that's another bag you will need to fill soon enough, and you can't run all four on one pump in my opinion - it would take too long. You could save a little money and go with aerator pumps over the reversibles. That is what I currently have and they have treated me well (although reversibles would be nice). The timing really depends on you and how you most enjoy your time on the boat. Time to sit/fill or on the go?

The 1100's will fit in the 07 LSV with bracing as you said. If you plan to do a lot of surfing, definitely go with the 1100's. The 750's I have put out a good surf wave for our use but we spend most of our time and effort progressing on wakeboarding. As I mentioned earlier with the 750's and some weight up front, we get a great wake for boarding.

If it didn't come with Perfect Pass, that would be mod #1 in my book. The ACME 1433 or similar prop upgrade would be #2 with the added weight.