I also have a L4630GSTC and have the quick mount subframe for the 72" front mount snowblower. I will get the 84" blade next. You have to take loader off for the winter and then controls will raise and lower frame and the curl function becomes the chute direction on blower or left/right angle on blade.
Snowblower sounds nice. If you don't mind my asking, how much, all in, to install, ballpark? Also, will the blower handle 3-4ft of wet snow?