Help choosing motor for new z18

Oct 27, 2015
New york
Triton 17 pro
First post so Hi everyone! I will be ordering a z18 this spring and was wondering about motor choice. I am thinking the 175 pro xs. Mostly for fishing and pulling tube for the kids. Would the 150 fourstroke have good low end? If anyone with personal experience with the motors could shed some light I would appreciate it!