SafeRacks Important questions to ask before installing!

I ask three questions to consider when thinking of SafeRacks to install DIY. SAFE RACK INSTRUCTIONS https://www.saferacks.com/installatio... The Franklin Sensor model I have is the 710 Stud Finder, and the nut driver for the lag screw was from a MILWAUKEE ELEC TOOL 49-66-4563 5 Piece Insert Nut Drive Set.