I'll respond when I get home. Too difficult on my phone.
ETA -At home now.
Being a 2017 model boat it's fuel system will be "sealed" and not
vented directly to the atmosphere (EPA rules) so the fuel should
be "OK". However, I would try to drain/siphon out as much as you can
if it has more than a 1/2 tank in it. If it's only got 1/4 tank or less, fill
it with fresh fuel and try to get it started.
Being a 2017 I'll assume it's a fuel injected engine as well which are more tolerant
to sitting for extended periods of time since FI systems aren't vented to
the atmosphere like a carburetor is.
I would recommend doing a standard annual service which is an oil/filter change,
fuel filter, gear lube and a water pump impeller. The impeller isn't necessarily
an annual thing with your outdrive (Alpha 1 Gen 2) but since it's been sitting
it's cheap insurance and you will know it's good. Normal service interval on
that impeller is three years or 300 hours, whichever comes first assuming you
don't run it dry or pump a bunch of sand/mud through it.
Any questions just post up.
<--Certified Mercruiser Technician.