If you are out of the airport for 7.50am. get a taxi to use the expressway (tollway) and get to Dom Muang about 8.40pm,then get your ticket smartish you will be OK.
I think the key is how long the queue in Immigration will be.If you are lucky enough to be near the front you stand a chance.
Failing that it will be the 1.20pm Thai flight,I'm afraid.But if that happens,look on the bright side.A chance for you to take your young lady shopping in the Siam Paragon !







