PA, congrats! I'm in the same boat, albiet a wee bit her down the line. I thought I would want to "move up" but am content as all hell with the LCT. When I decided to load 357sig I simply added 2 turrets: one just for the 40 S&W sizer die and the other for the 357sig dies. I remove the auto-index rod and use the LCT as a single-stage press to size the 40 portion of the casings. Then I slip the auto-index rod back in place, install the other turret and I'm ready to load. I had thoughts of purchasing a single-stage press but that's the beauty of the LCT; I didn't need to. I simply bought another $10 turret.
As I recall, you live someplace in the Central Florida area. The Orlando Gun Show is next weekend. I've already called Space Coast Bullets and gave them an order. They will have it there at the Gun Show. I do this every time the Show comes to Orlando. I own a collapsible luggage cart with a metal basket I can attach with bungy cords. This paid for itself in the first 30ft! Bullets, powder, primers, etc. get heavy real quick.