First, a 102 shoud have a 10 horse engine, but 12 is good. The Kohler K sieres engines are great wotk horses. Easy to rebuild.
You can put a rear PTO in them, but it is pretty much useless. It turns the wrong way and at the wrong RPM. There is a front PTO for the mow deck, snow blower, sweepster, generator, and a rear mount rototiller. Plus anything else you might want to drive with it.
Cat. 0 3point plows and other attachments are available for Cubs. But I do not think that a Cat 0 3 point is available for a 102. It will have a "Sleeve" hitch. A 8, 10, 12" moldboard, sleeve hitch plow is available new or used.
Ag tires are available for the Cubs and you can get enough traction with wheel weights and fluid balst (Usually windshild washer fluid).
I think the widest deck you can get under there and still mow would be a 44" deck. (I will have to look into that.)
This link will take you the the "Plow day" section of the Cub Cadet sight. You will see a lot of Cubs at the John Deere event.
Oh and the electric lift is a personal opinion thing. It is slow but works. Most guys look for a hydo lift to replace it.