According to the schedule, MSEP is at 8:00 pm and Wishes is at 9:00 pm on September 8th. For MSEP, that gives you about 90 minutes to be seated, order, eat, pay, and then go find a spot to watch MSEP. My instinctive answer is that there is a chance you'll be able to see MSEP after dinner, but there is also a good chance that you'll miss some/most of MSEP. BOG is very popular and it's not uncommon for it to be running behind schedule (e.g., when I was there, it took 45 minutes to be seated even with an ADR); although I don't think it's as notorious as 'Ohana. I think you stand a much better chance of being done in time to see Wishes.