I feel it's a bit much rock myself, although you have it well arranged considering the size. I would get a large box or something for dust, which you'll use later with the glue and insta-set spray for fast curing areas. Any large hammer (3-4lbs+ is best) but the most important item is you'll want a good chisel. Break up some rock in pieces then find a few to break up into smaller ones. Repeat twice or so until you feel you have enough to begin gluing them together. I wouldn't do more than a few of the larger rocks from what I see, maybe those that have no coralline or those with false coralline or are painted.
It is advised to use a foundation piece from Marco's Rock where possible but not in all cases. It can be helpful but not required, to tape off the area of your tank on the box or buy some cheap plumbing to makeshift a work area. Glue the rocks together as you picture them to be, adding some ridges here and overhangs here. Use the leftover dust in a space between two pieces and then add glue, spraying the insta-set on areas where you need to let go sooner. Add extra glue and more dust on noticeable areas to conceal. Use epoxy where needed on large pieces and try to not put all the weight on a single pile but think more like a tree or coral itself grows. Break off and rebuild any pieces you don't like right away before they cure overnight. Be sure to leave enough room for fish to swim around and to clean occasionally. Do keep in mind a height greater than 60% will be tight for an SPS tank and 50% for mixed reef is best. The areas to consider are what you want to put in your tank, not just corals but also of fish and their habitats. Also consider the areas for flow and the last thing is, make sure its clean before putting it in the tank.
