A few suggestions:
I would get quotes from EVERYBODY for all scenarios before making a decision - you have plenty of time to do so. $5K is realistic and you should have no trouble staying under that number.
You can book on-site packages through
AAA with some good discounts. Travelocity also does on-site and can be booked 330 days in advance. Go to the "package" tab on their website and click on
disney vacations. I'm not sure about Expedia but they prob have similar.
Check out the value suites, no real kitchen, just a fridge and M-wave, but you get 2 rooms, lots of beds and two bathrooms. They are pretty reasonable and can be booked through travelocity and AAA.
On-site with a FW Cabin and the
DDP.
Cabin $1750 [rack rate]
DDP $ 776 [38.99/day per adult(over 10) 10.99/child]
Park tiks $1112
Transport via ME fro/to airport and WDW transport on site - free
$3638 leaves $1362 for airfare and misc. P.S. The value suites are even less, you'll have to price them.
Have you considered off-site in a condo, townhouse , or home with private pool. In the past we have been six(4 kids), have stayed on site in two rooms and off-site in condos/townhomes and much prefer the condo/townhouse accomodations. WDW lodging is way overpriced IMO, and the EMH's are tough to take advantage of with that many young kids and the park's early openings/late closings during June. I cant imagine getting all 5 of them to breakfast by 7 for a 8 am EMH opening. Obviously airfare will vary depending upon your location ability to get good fares. You can rent a nice villa or townhome at Windsor Hills or a similar resort close to WDW with private pool and nice resort ammenities for 700 and up depending upon #of bedrooms, what season you go, etc. Those extra bathrooms and bedrooms and a real living room, dining room and kitchen are pretty nice during a long stay. A minivan can be rented for approx $300 - $350 for the week and between the two you have the option of eating out at cheaper places and eating a few meals in.
On a $5K budget you can easily do this trip and stay in upscale accomodations.
Townhouse $1000
WDW Tickets $1112
Minivan + gas/parking $450
That leaves roughly $2500 for airfare and food which should be ample.
As you're not going until June 2008 you have plenty of time to shop and put this together - and convince DH to go and help you with those 5 DC's.