The prop looks ideal to me, don't forget that it carries quite a lot of weight relative to it's size (not so much in your case, be careful that it's not too light!) so it'll sit very low in the water at rest and needs a deep prop to bring the rear up.

A top tip I got from somewhere else is to go straight for full throttle at startup, if you try to idle the cell pack weight will literally dive the nose below water (believe me I've done it), ease back on the throttle in the turn or it'll spin out.

By the way, love the miss Bud, something of a work of art those proboat hulls...