No, No and No... welcome turkeydad. Slugs turn a shotgun into a bullet firing firearm. Albeit a large one. chokes can damage the firearm, and/or the shooter.
Slugs can be fired from "full cylinder bore" NO CHOKE actions, do not take the chance on firing a Remington Slugger through a barrel with any type of choke.
Chokes are designed for "shot" and pattern,....launching a 2 3/4" or 3" sabot slug/bullet, needs all the barrel it can get.
For SD, check the archives here, including Rob Pincus's analysis on home defense shotguns.. No. 2, through No. 9 shot at SD ranges, within a home, are totally adequate. Usually less than 21 feet.
I like No. 2, 9 pellet Winchester Super X 2 3/4", staggered with No. 4, 21 pellet, with slugs as the last couple in my Rem 870..
It has to hold them off long enough for the wife to get the safe open,... Unless its Zombies, it should be good enough.