If you run the tire against the wall and follow the setup in the manual we have here, you will do just fine. Yes, it's nice to pull a full 10, but not mandatory and there are dirt plots out there you will wish for less bite. (Only thing this is missing is rebar to call it concrete...)
Big plows have the advantage of weight. They will stay in the ground and go deeper than our rigs. Sometimes a plow day has the perfect ground and conditions and sometimes you fight to get penetration. The basics are all the same from ours to a bigger plow, but sometimes the physics of reduced size does play a part.
Set it up as per the manual, and go have fun. Minor tweaks from there.
And if you watch the guy who is having the most fun, his furrow isn't significantly different, he is just looking back less.
Oh, and there is always one grump. I was chastised last year at PA Plow Day for digging deeper than the guy behind me thought I should. I was rolling 7-8". Maybe he was tired of tipping to the right, maybe I helped him scuff his undercarriage, maybe he high centered, maybe his wife was nagging at him for something. After a short worry session, I gave up giving a crap.