Setting up my 75gallon reef + livestock tank

[robandrosco]

Well So far I have acquired a 75 gallon long tank. 2 aquaUFO LED lights, A 50 gallon refugium. A CS Overflow (800 gph). Rio 2100 return pump. and all the necessary plumbing to get it together. Got a bucket of NeoMarine reef salt as well.

Here's my questions.

As far as a protein skimmer goes.. I have no clue about these.. I know they remove waste from your tank and help with clarity but I have absolutely no clue what type, brand, or size that I will need. I want it to be in my refugium (on the intake side right?)

When should I add live rock and live sand? I was going to fill the tank with regular water and run it for a day or 2 to make sure I have no leaks, then drain and make my salt water.. Is that the point where i should add my LR and LS?

What is the best way to cut acrylic? I'm going to be making my own lids for this tank.

Will be posting more questions once I get past these.

Thanks in advance for any info and suggestions.