here's what i did...
i priced the package thru waltdisneyworld.com and then i priced the components individually (thru various vendors, not just thru wdw) and made a spreadsheet so i could compare "apples" to "apples" and was all set to book each component individually and then the 5+2 deal came out and it blew all my individual components away, so that's what i went with... the only thing i did not purchase w/my package was my airfare and my rental car, those i purchased separately...
the first step, imo, is to figure out what you need (hoppers? plusses? uph's? 1 room? 2? suite? value? mod? etc...) and then price them all different ways and see which way gives you the best value...