install the conduit empty, it's for later additions
I bought most of my cables from Monoprice, great resource
I've read that Deep Surplus may be another good online place to buy cable
local electric supply stores' prices may be competitive with online, when shipping is added
rent the right angle hammer drills
you might go through several bits, of various sizes
take a million pictures before the drywall goes up
have you considered water sensors, and an electronic valve on the water main? that's on my list of things to do - under sinks, behind toilets, behind fridge/ice maker, laundry room, etc
label each cable immediately
don't leave cables where people can step on them
gentle bends for ethernet cables, no sharp turns
ideally, add connectors to the ethernet cables and test them before the drywall goes up - pipe dream, but had to be said
any plans for spray-in insulation? additional steps needed to protect the LV cables
basement to attic conduit would be useful for retrofitting cables, down the road
the front door may need some extra cables
any plans for cameras? motion sensors?
Since you're prob doing this yourself, maybe you could hire a local CI to help plan/design the install, if you're really short on time.