If you have a racor, I would say, change the filter (2 micon) and the engine fuel filter, engine oil and filter, check that valves are free, and fire away.
Although I would drain and clean the tank on any used boat I purchased, shortly thereafter. I would also check for cracks in the fuel feed, return and vent lines which gives me a good excuse to change the feed, return, and vent lines so there is no gunk in the system. But I am kind of special.
The fuel does have a lower cetane level if it has been sitting for 1 1/2 years
Dirty fuel will damage the injector pump as well as the injectors.
If you get no or low fuel flow with a 2 micron filter, replace the fuel pump.
I would think that Fuel polishing the 10-14 gals in the tank should cost more then to drain and replace.
Also the onboard "add a electric fuel pump" recirculating fuel polishing systems work great on a small tank like yours, and also bleed the system easily.
Congrats on the new boat