Just noticed in your picture that your MP10 isnt mounted with the little sticky thing and zip tie to hold the cable upright... I highly recommend doing it.. If for some reason the pump fell, that clip keeps it from crashing down onto the floor and damaging itself... Would not want to pay for a replacement dry side.
As far as the wave setting on the return pumps, keep them on at the same time... with an MP10 you can create various currents, so no need for it with the return pump... mine acts like a plug saver. When I feed and have to disconnect the return pumps, its only one cable instead of two, lol
To start up a cycle, just head out to your local market and buy some (1) fresh shrimp (dead), toss the sucker in and watch the cycle start.
The aquascape - one rule is it will NEVER go back the way it was. lol ask anyone, that was many of hours of frustration for me before, now I learned that if i move the rocks, then I just build a new scape that works. So if you find one you really like, dont mess with it. I would agree gluing and epoxying the rocks unless they stack very very solid. One problem though is that early in the tank you will want to change your rocks pretty often until you find what you like, so that being said, wait off on the jawfish, once you find the rockwork you can live with, then epoxy and glue it and then introduce the jawfish that way you wont regret a rockwork you glued together and now cant undo.
Another alternative to gluing the rocks is using thin pvc piping, drilling holes in the rocks in appropriate places and then using those pvc tubing as little pegs to hold everything in place, kinda like building Ikea furniture.
Good luck and Im looking forward to seeing what else youve got!