Flight arrives at 7:11 (perhaps, if there are no delays)
Making your way through the airport to ME: monorail to the main terminal, maybe a bathroom stop (20-30 min)
Wait time to get onto ME and for the bus to fill so you can leave (we've waited up to ½ hour before)
Transportation time for the drive from MCO to your resort: ½ to 1 hour. Will be longer side if your resort is not the 1st stop.
I have been told that a total of 2 hours allotted for ME is a good rule of thumb.
If ME is delivering your luggage and you do the online resort check-in, you could get off the bus and go straight to dinner. If you have your heart set on 'Ohana dinner upon arrival, I wouldn't schedule it any earlier than 9:30 pm. To avoid potential ADR charges for a no show and to relieve the stress of making that ADR time, I'd probably opt for Captain Cook's that night with a dole whip dessert...maybe a drink on the Trader Sam's Terrace.
**This is assuming you are taking ME. If you are renting a car, your arrival time would be earlier.