a set of rachet and sockets can be had for $20-30, a cheap torque wrench for $10 or less (flex bar type), otherwise you can use loctite blue to keep the sliders' bolt in, it's only rated at 16-20ft/lbs for most passenger cars. anything more and you're going to snap those 12-14mm bolts..
You'll also want a good-sized C-Clamp (~5 bucks or so) that will fit over the caliper. You'll need it to push the brake-piston back into the caliper... otherwise you'll have a hell-of-a-time putting the caliper (with new pads) back over the rotor.
^also adding to the C-clamps, don't use it directly on the piston's center, the piston is supposed to puch the pads at its' outer lip, not the center, so use the old brake pad to help apply pressure to the piston. Remember to open the master cylinder cap as well or loosen the bleeder screw, otherwise you're looking for trouble down the line.