Thanks for the kind words!
A few more suggestions if you decide to go with a pump shotgun strictly for home defense.
(1) Most likely you will have the barrel shortened [18_1/2 inch minimum barrel, 36+ inches O/A length to avoid Federal "sawed off" shotgun violations], removing any choke. If you carefully squeeze the end of the barrel in a vise to reduce the vertical bore by about 0.040 inch [for 12 gauge], possibly a little more, you will have created a "duckbill" type choke that will create a wider but shorter shot pattern which can be helpful. This "choke" should taper smoothly from bore size to 0.040 less vertically over 2 to 3 inches. A few hacksaw cuts across the end of the barrel on the top will also act as a "compensator" helping hold the muzzle down when rapidly fired, although this will greatly increase the muzzle flash/blast perceived by the shooter under low light conditions. If the slots are angled toward the rear of the gun you may get some recoil reduction which can help in a rapid fire situation. If you do either or both of these modifications, be sure to test fire gun with a looooong string using heavy hunting loads.
(2) In all likelihood, any intruder confrontation will be in low to minimal light. If you paint a wide [3/8 - 1/2] white stripe on the top of the barrel it will greatly help in target acquisition/aiming under these conditions, as will painting the first one or two inches of the barrel white.
(3) While I suggested #4 as the largest shot size to avoid over penetration, #2 goose loads should also minimize over penetration, and may provide a slight increase in stopping power over the #4 shot.
For safety and reliability I suggest keeping the shotgun uncocked (avoiding spring fatigue) and without a round in the chamber (avoiding "cook off" problems in case of a house fire). [FWIW - a condom or toy balloon over the muzzle will help keep the dust, mud dobber nests, ect. out, and you can fire right though it]. As part of your mental preperation, you should never display your weapon or chamber a round in a confrontation, except to use it, and the split second it takes to jack a round into the chamber and then fire won't give a perp time to say "ah sh**", let alone time to draw and aim a weapon.
This advise is worth at least twice what you paid for it...