It does not stop you from using the PTA, it is attached to the mid PTO for power
I put it on myself, it was very easy to do and yours will be exactly the same. Just keep the plastic inside and warm and install the brackets and frame and put the plastic on last. We did ours outside too this year.
It is true that the engine puts off enough heat to keep you very comfortable in the cab. I blew snow this year at -5 and was very worried I would freeze my arse off because I have metal rods in my back. To my surprise I was very comfortable,. Do you have ag tires or lawn? I have lawn with chains that are tight and have had no issues on my hill even with all the ice we have had this year. I seldom even use 4wd.
I believe I paid nearly 4k for mine. I know I posted somewhere on here how much I paid for my blower. It was expensive, but for me the only option. I did not want to put a plow on my new truck.