
...we can do POR for almost $1000 less! We have BC booked and have budgeted for that, but now I don't know if I can justify spending that much extra $! I'm not thrilled with the decore at alligator bayou, but our youngest will be 5 and fit on the trundle. I just imagine more "magic" at Poly and by the time we can go again, all the kids will be jrs and the price will be way unaffordable then.
Especially with a family $1,000 is a lot of money. Think of POR as half full: given the size and age of your boys it may be the only time you get to stay there.

They will likely love the trundle bed and even fight over who gets to sleep there. A double bed and sharing a room with the kids doesn't seem to be an issue for you and hubby so POR would work.
The kids will still have a fun pool with a slide. There is the boat to DTD, game room, etc. Enough for the kids to enjoy and for you to see their faces light up. You will still get to tour any resort to see the holiday decorations.
Putting that $1,000 in the vacation fund might allow you to get back to Disney one more time before the kids are too big or let you and hubby sneak off for a weekend trip at BC or the Poly some time. You could also spend just a bit of it to insure some additional "magic".
The $100 to move from one resort to another isn't as big a deal, but $1,000 really gets your attention. One complaint I've heard(not just read on DIS) about the Poly and could likely apply to most of the Deluxes: CS is too small and REALLY crowded in the mornings. The Mods have more extensive CS facilities, so that part of your stay will likely be better at either at Mod or a Value. BC/Boardwalk hotels seems to have the weakest CS offering of any Disney resort.
Lastly, we stayed at CBR last summer. Though it was obvious that our fish, I mean my 6yo nephew loved his time in the pool there(he even swam after check out and we showered and changed him at the pool house) his Disney memories center around other things: characters, character meal and a favorite ride; not the room or the resort even though I know he loved those too.