touring crowds will be generally low but dining crowds will be heavier. It will be hot most likely.
I wouldn't cut down my vacation time to stay at a deluxe hotel. You just don't spend that much time in your room. (Or probably more precisely, we don't spend that much time in our rooms.)
We have stayed at deluxe, moderate and value levels. POFQ has become our resort of choice. The size small provides just about as much convenience as the Contemporary (which I think is slightly more convenient but not necessarily better than the Poly) when we stayed there. The pool, food court, parking lot and buses are so close you spend little time walking around the resort. And those little intra resort trips can add up quickly in the larger resorts.
Easywdw has a comparison of resorts in the various categories. Some people values some attributes more than others. They use their own weighting but you can use your own system in picking out the best resort.
http://www.easywdw.com/category/disneybest/bestresorts/
As noted above an Epcot resort might be more convenient if you plan to eat in the World Showcase almost every night. It is also close to DHS which should interest your sons and the Beach and Yacht Club resorts share the best pool area at WDW. You can find rack rates for all resorts here:
http://www.mousesavers.com/roomrates2012.html
You may even be able to add that extra day by shopping resorts. Comparing the least expensive rooms for that period, the Contemporary is about $90 less per night and the Beach Club about $70 less.
In fact there is a general public offering that shows the Yacht and Beach Clubs and the Boardwalk with up to 30% discounts and Poly, Grand Cal and Contemporary with only up to 20%.
August - September: Save up to 30%!
Discount is valid for stays most nights 8/15/12 9/29/12.
Save up to 30% when booking a room at select Walt Disney World resorts from 8/15/12 9/29/12.
Sample Pricing: The following pricing is for select dates 8/15/12 9/27/12, Sunday Thursday in a Standard Room. Sample pricing does not include tax. Rates will vary depending the resort, room type, and dates of travel. Click Here to see a list of the non-discounted Rates.
Disney's All-Star Sports Resort just $70/night!
Savings Include:
5% - Pop Century, Port Orleans French Quarter, Fort Wilderness Campsites, Animal Kingdom Lodge (Savanna view, Arusha view, Savanna view bunk bed, Arusha view bunk beds), Wilderness Lodge, All other Deluxe villas not listed below
15% - All-Star Movies Resort
20% - All-Star Sports Resort, All-Star Music Resort, Port Orleans Riverside Resort,Grand Floridian Resort & Spa, Contemporary Resort and Polynesian Resort
25% - Coronado Springs Resort, Caribbean Beach Resort and Fort Wilderness Resort Cabins
up to 30% - Yacht and Beach Club Resorts, BoardWalk, Animal Kingdom Lodge (standard view, pool view, pool view bunk bed, Standard room club level), Saratoga Springs Resort & Spa and Old Key West Resort
This discount must be booked by 8/14/12. The number of rooms set aside for this offer is limited. Minimum stay requirements may apply for Friday or Saturday arrivals. Excludes suites, 3-bedroom villas and Art of Animation Resort. All discounts are subject to availability, certain restrictions apply.
You may be looking at this already but in case you haven't seen the offer it might save money.