Just last year I bought a brand new 16' Crestliner fishhawk with a 4 stroke Honda 50hp. It was just under $15,000 w/trailer, rigging, etc. For another $1,700 I could have gone with a 75hp. For $2,400 more, I could have gotten the 90hp. I chose to stay with the 50 because I could not see spending the extra cash just to go slightly faster. Also, the 90 Honda weighs 200 pounds more that the 50, so thats like having another person aboard.
I dont think you can get a new 17' Crestliner or a Lund with a 90hp and full windshield, trailer, etc for $17,000, but you are almost ballpark.
Maybe you can get a cheaper brand 16' boat with a cheaper 90hp or 75hp for $17ish, I dont know.
The one thing that you have in your favor is that you are boat shopping at the right time of year. Dealers are a bit more motivated right now than they are durring springtime.
Good luck