You will probably be able to do a majority of the major attractions. What you might want to think of doing is get to MK as early as you can enter with the
MVMCP pass, usually around 4 or 5. Take in a couple of rides at that point, and then position yourself in one of the areas that you really want to hit a couple of rides in quickly such as Frontierland for Splash Mtn and BTMRR. What will happen is that portions of MK will be shut down @ 6:00 and then re-open @ 7, so that the non MVMCP attendees can be shepherded out of the park.
You will be wearing a neon colored ID bracelet that will ID you as a MVMCP ticket holder. You'll get this when you enter the park. Decide which parade you want to see. In your situation I'd personally try for the second parade, and use the first parade to get in some additional rides. Then, make sure you see Wishes, which usually goes off around 9. The second parade is around 10:15. By that time the crowds will have thinned because most of the party-goers with small children will need to get back to the room because their little ones are worn out. You will then probably be able to hit a few more high profile rides at this point with little or no wait.
As other posters have stated, stay away from Friday and Saturday dates. Go for a Tuesday or Thursday. The one big snafu I see in your plans is that you don't have any fudge factor in your schedule in case it rains. Usually, I try to tell people to buy tickets for MVMCP for as early in their trip as possible, so that if it rains, you'll be able to exchange your tickets for another night.
Good Luck and Have Fun!!