It might be quicker just to have bell services at your first resort move your luggage for you that way you can leave straight from resort 1 in a Minnie Van to MK and get dropped right at the front. Otherwise, you'd have to get to Resort #2 (looks like GF for you), drop your bags with bell services then hop on the monorail to get to MK. There may be a decent line at GF of people checking out that day trying to get bell services to hold their luggage while they hit the parks one last day. Our last trip, we were at CBR going to CSR and we had them come get our luggage to transport it around 7am, then took a Minnie Van to AK for rope drop.