Good advice so far, a few points:
Double cylinder deadbolts (key inside and out) are a Life Safety Code violation in most jurisdictions and illegal in new construction, apartments, and rental properties. Deadbolts on interior (hollow core) doors are a complete waste of time.
Deter access: fence, dog, alarm (independent of home electrical and phone systems) no cover for BG around house giving time to work on entry points. Tempered glass or plexiglass to resist breaking windows. Be able to light up the area around the house like a football field. If you have blind areas (can't be seen from inside without exiting) install cameras.
Deadbolts should have collars extending into the door to prevent ice picking in addition to the reinforcing advice above. Don't believe the 'can't be picked' hype advertised on some locks. If it has a keyhole, it can be picked, if its electronic, it can be bypassed.
Its ugly as sin, but the old 2x4 in brackets is very secure.