Okay, so you arrive Thursday the first and check in Vistana Resort (make sure you tell them you want the newer section i.e. cascade section; we were there this summer and got an older section which we did not like very much).
I don't know what parade you are thinking about? I have not gone in January, so I can't help you out with that. What day is this?
You have plenty of time to do what you mentioned. You can do a park on Friday. Do whatever you want over the weekend....outlet malls, etc. On Monday-Thursday, it leaves you five days for parks there, also. Therefore, you have six days for parks, so you could add a day at WDW. You can get the kids in over the weekend to DisneyQuest while you shop at the Marketplace in Downtown Disney.
Personally, I would do one day each at Universal and IOA and then a third day for the rides at each park that are must do-overs. (this summer, the teenagers and I did Dueling Dragons over and over and over again on the third day), one day at Epcot, one day at MGM, and the other day to split between AK and MK (check it out and see how magnificent Cinderella's Castle is compared to Sleeping Beauty's Castle).
I really really think you need to add one day to your WDW itenerary. WDW is not like DL at all! You can compare DL to MK, but that is just about it. I was in shock the first time I visited WDW being a frequent DL visitor...this place is HUGE. You really should reconsider adding more time at WDW.
I hope this helps. Check out the park hours for January and work from there for the park days. You could also do parks over the weekend if the hours are longer. I think Universal has the same constant hours of like 9am-7pm throughout the year, so those days could be flexible. See when the firework shows are (I heard Wishes is great, so you should do that along with Fantasmic and and Illuminations) and do your days at the parks accordingly.