Wow, Your TANK is identical to mine except mine is an LZ, lever steer vs SZ steering wheel steer. I had my choice of 54 or 60 inch deck, I went with 54, and now I'm kicking myself for not going with the 60, the dealer had a 60 all loaded up ready to deliver to me. I'm finding that extra 6 inches would not have kept me out of as many places as I thought, and the 60 would have gotten me done 11.1% quicker. The 27 hp Kawasaki has NEVER been at a loss for power.
How do you like your steering wheel? I had several jobs where I ran Bobcat skid steer loaders, with lever steering. I ran my TANK around my driveway for 5 minutes while the salesman stowed his straps he had it tied down with, He watched me a bit, flagged me down and said I should call if I had ANY questions. I was half way across the front yard when he pulled out of my driveway, I was done mowing in about 2-1/2 hours, took over 3 hours with 982 & 50" deck. I've mowed in 2 hours a couple times, new goal is 1-1/2 hours. I've got some clutter in the yard to get rid of to reach that .
I've been pretty happy with it. The second season I had shoulder surgery and I would have been unable to operate a stick mower. On the other hand it's more complicated and I've had some issues with it tracking and I've not been able to find any documentation on adjustments.
My mowing time was reduced considerably reduced also and whenever I'm threatened with bad weather I let her fly. The suspension seat only helps if you stay in it!
I tried blocking the discharged to help mulching leaves and that works really well. I have some areas where I have beds on either side. I'm considering something like this to help.
Advanced Chute System ACS6000US
In theory a plow should work well on a zero turn, a lot of weight over the rear tires and positraction (sort of)
I agree with your power assessment, all things considered I would probably purchase again...
The blade and mower get a pretty good assist from some springs, but it's manual. Similar to garage door springs. And the left/right is also manual. But it's what I'm familiar with from my former rig. It was pretty good in the snow!