The boat is 11. Assume the outboard will be replaced and if you can accomodate that you should be happy.
The motor is the biggest replacement cost item on the boat.
Most everything else on the boat is simple and inexpensive to replace if you need to, just make sure the hull is in good shape.
My Honda 50 was a beautiful but useless transom ornament when I bought my X, a new trustworthy outboard is worth the bucks.
I'm now a NAAH guy. Never Again A Honda.
The best outboard is the one you can afford -and- the one you can afford to get fixed.
Sooo, look around at the kind of service you have in your area. There are 8 places an easy drive for me that support Yamaha, Merc and Suzuki.
Not true for Honda and parts are dear and come from Atlanta... I'm on the opposite coast of Florida.
The collective opinion is right about cost for a new 50, and that's the max the boat was rated for.
But a new servicable motor can be had for less than $8K. My Yammy 40 ran about $5K installed and can move my boat about 18mph top end.
If you truly want a planing Mac X, consider the 70 to 90 HP range, at about $120 per horsepower.
I lusted after a 2 stroke 'Rude but just couldn't part with the cash plus, I'm out there to sail.
A survey may be overkill but I did it, but it didn't help with the motor. They have liability to worry about and can't thrash the thing to see how well it operates.
Usually they tell ya to have a mechanic look it over but that's not gonna show you the salt deposits inside the engine.
Whatever you do, get a water separating filter installed ( $40?) and use a good fuel additive like Stabil.