Need Advise…

Might be looking to power 21’ Apache Scout with New Merc 300xs.

I have a few options. I want what will be best for the boat, but also want to take resale of motor alone into consideration. I will probably only keep the boat for about 2 years and sell it. I might end up selling them separate.

Boat has Extension Box and Hyd Jack Plate, Tabs. Boat will be used in the ocean.

Options:
1st Choice:
Optimax
or
Offshore (Offshore is 700 more)

2nd Choice:
Sportmaster 1:62 or 1:75
Torquemaster 1:75

Not sure what this boat will top out at, results with similar power on other Scouts are anywhere from 75-85 mph.

Thanks