I have a roughly 14" * 14" hole in my ceiling, after an electrician put a junction box there. The box is a flush 10×10 box, and I want to be able to remove the lid later. The lid right now is close to flush to the bottom finished side of the 1/2" drywall. I don't have a lot of experience with drywall, and I'm especially puzzled on how to make a nice transition to this box (which does not have a mud ring). I could cut back the sheetrock a bit on each side to expose half of the joists. Would you recommend one large piece of drywall with a hole cut for the box?