98 Mercury 2stroke 30hp...What prop to use

[NYGiants]

Ive got a 1998 mercury 2 stroke direct injection 30 horse on the back of my 15' lund aluminum boat. Its a heavy duty boat, weighs about 400 lbs, has floors and swivel seats etc. What prop can I use for maximum speed? I can get it up to about 25-26 mph with one person.
Is it worth it for stainless? Im thinking about this one
http://boatpropellers.iboats.com/Me...-110-15_Propeller/272/7259/?cart_id=169273133

 

[Mi duckdown]

tiller or console?

 

[NYGiants]

tiller. Im planning on going with stainless since my aluminum prop has gotten pretty chewed up over the past few years. Im not sure on 3 or 4 blade or the pitch