I only use Optex or Bosch myself therefore minimum quads as standard in any "living" rooms. Dualtech for harsher environment like garages etc.
Sensors would normally cover a full 12mx12m room so two in one room is unnecessary unless you have blind spots.
Consider ditching the tiny internal sounder built into the Poly cab and fitting a proper one elsewhere, something like a CQR Alto extension speaker or the like.
Contacts minimum on any entry door others optional unless in pet areas.
Wouldn't recommend glassbreak, better with shocks if your doing windows but consider bird strikes on large bi-folds and windows.
If you have any sense your unlikely to have much of an issue screwing whatever to the wall it's the design, knowing how it all programs and fits together you would likely come unstuck on.
Expect may hours of reading manuals, pressing buttons and terminology only alarm monkeys speak before you get something near working.