Do not book the package!
Go to expeidia or orbitz to price airfare. Does Southwest, AirTran or JetBlue fly from your airport? Look at their sites for airfare. Airfare wiil be the same as Disney since you are going to the same airport. Ditto on car rental. Car service is slightly cheaper.
If you want to stay on-site, call Universal directly to book hotels--be sure to ask for the
AAA discount. If you want to stay off-site, post questions on these boards and you will get advice on where to stay for a decent price. You can also look at HotelKingdom.
Look at the ticket special going on now--you can buy a 2 day ticket for $99 and get three days tacked on for free! That means, 5 consecutive days at the two parks for about $106 including tax. If you have kids under 10, you can get their tickets free. I have not seen Disney come close to beating that!
If you want to PM me with your particulars--travel dates, home airport, hotel preferences, ground transportation preferences, etc. I would be happy to look a few things up for you.