Do you have, or could you borrow a large enough crate to transport Decker in where he wouldn't feel as confined and stressed out as the cat carrier? If you used it as a place to put his food for a few days before the move, he might get accustomed to it enough to be able to shut him in at some point, and get the move done!

I would absolutely consider moving the cats, maybe a couple at a time, over to a spot in the new house where you can leave them with the door shut while thing are going on, especially to moving of furniture. And if you hire movers make sure they know how many cats there are and where they are. When Lady's Human and family moved a state away, one of the movers unfortunately left a certai door open, and Pippin, a big (20+ pound) orange fluffball ended up spending a couple weeks in a space between the floor of one level and ceiling of the one below it. He was eventually enticed out, but it took many days and visits from Grandpa with kitty treats and food ... not something we need anyone else to have to experience.