I did ride a MX1825 last year with a F150. That was a showroom boat with a light load and two guys.The hole shot was good. I think the f150 has improved midrage power this year and I have not rode in a boat with a new motor. When I recieved my boat I did not have the correct prop so I do not have a good comparable for a light load. I would recomend seeing if you can get a test ride, fill the rear live well and see what you think for yourself.
I could be wrong but I believe the F150 takes 87 Octane
With the F200 I would have no problem taking four people fishing. There is also a noticable difference on hole shot with a full and empty live well.
Rod