I can get a smoking deal on a new Hustler Mini Z 19hp Kawasaki/52". I have some concerns and would like some feedback please. 1) Is the 19hp adequate for commercial (mainly residential) mowing? 2) The unit has smaller hydraulic pumps, etc. This concerns me...should it? Is it gonna last as long getting used commercially compared to a Super Mini Z or Super Z? 3) Should I move up a level to a Super Mini Z or Super Z? I'm just getting into the business, don't wanna make a mistake right off the bat. 4) Some say the 19/52 would make a good "starter" mower. I just don't want to buy a mower that it's gonna be "harder" on it because of smaller motor, smaller hydraulics, etc. Appreciate the info.