5m Humber Assault/Honda BF75 prop advice

[drcsfsh]

The boat came with a 13x15 aluminium prop, accelerates super quick but top end speed isn't great - just over 30knots with x2 adults/50l fuel. Rev limiter was kicking at times too!

I was thinking of either a 13 1/4 with a 17 or 19 pitch. Thinking 17 probably the best compromise but has anyone experience or advice on this ? My mates boats sit around 33-35 knots, be good to get somewhere in this ballpark. Would usually just be x2 or 3 adults

thanks

Mike