2005 Mercury Optimax RPM question

[alann]

Bought a 2005 Triton TR186 with a 2005 Mercury 175 Optimax. WOT I am getting 5400 RPM running between 58 and 62. I am happy with the speed (In my mid 60's so not a speed freak anymore:) ). I think it is over propped. Running a 25 Pitch 4 blade FuryII. Don't really care about the last little bit of performance another 350rpm's would give me but, wondering if running at 5400 WOT is a strain on the motor. Thanks for any input.

[JOE54]

too big , prob way to big loaded,would try a 23 tempest