Wow Jim! I didn't know you had (4) kids, you busy bugger
Good choice with the The Disney parks. They are a lot of fun for kids and adults. My dad used to take us when we were kids, but after that, I hadn't been for years until just a couple years ago. I think I had more fun now than when I was a kid
Cheapest way would be if you happen to have friends in the Orlando Area who would shack ya up for a few nights
Probably the best was to go about it is check out all the "Deal Packages" (and there are a LOT) Not only disney.com, but also check orbitz.com and travelocity.com. Both have great deal pacs available. Some include the airfare, parks tixs and hotels (in the park) Are you sure you want to drive?? Gas prices are rediculous
You may be able to get a deal pac that would end up being cheaper if you fly. (just another option) Otherwise go for the deal pacs with the park ticks and in park lodging. They also have Value priced lodging in the park that are a LOT cheaper than the "big" hotels and still nice rooms, etc. Yet another option would be to just get the park tix pkg without the lodging as there are several Super 8's and Howard Johnsons very close proximity that have VERY reasonable room rates.
Magic Kindom (kids fav) and mine, lol is pretty big so you'll probably want a whole day for that park.
Epcot Center (even bigger) is pretty cool to, but a bit more of an adult theme although the kids will still enjoy
Again, you probably want one full day.
MGM and Animal Kingdom - if need be you can probably do both of these in one day. also lots of fun!! The animal kindom is COOL!!