A few observations....bag check at Epcot is after the monorail entrance...so you don't need to worry about that. And the tram at MCO isn't really going to be a substitute for the WDW monorail.
For an ADR at the GF at 10:05, you need to be at the podium by 10. That means you need to be at the monorail platform at the MK no later than 9:30...it takes close to 25 mins to get to the GF from MK, not including any possible wait times. At least, that has been my experience. That has you leaving POFQ no later than 8:45...if you have to wait for the MK bus, it could be up to 20 mins!! So, you need to leave your room by 8:30! There's the 90 mins Disney will tell you to plan on. Now...having said all this....you probably won't need all that time. But, better safe than sorry.
Going to Epcot is just to be time consuming. Out at the Epcot bus stop by 8:30, ride to Epcot. Walk to the monorail. Up the walkway to the monorail platform. Wait for the monorail to get there. Ride to TTC. Transfer to the Resort Line. Ride to GF. You could make it. If you decide to do that, you may want to leave POFQ earlier, just in case!!