i don;t have a drill press, just a cordless and a corded drill. the cordless has a clutch on it to vary to the speed/torque. i'm going to use leftovers from my stand build to make a piece of wood to set the acrylic in to keep it from spinning on me when trying to drill it. i'm going to look for a unibit also.
i think i've decided to go with a back row with an 8, 6, and 4 inch rack, and a front row of 4, 2, and 2 (pretty much 1/3 will be 4 inches 2/3 will be 2 inches)
with these heights ill be able to use an assorment of frags, with a lot of low areas for zoas/acan.
thanks you the input guys, super excited to start working on this. pricing my acrylic now...