5 riding is a minor investment, and will be enough for any class other than really niche builds or ranged cav. If you don't feel the need to pump 2h wpf for dueling on foot, consider picking up some pole arm wpf through weapon master. Variety is the spice of life!
Other than that, 21 or 24 strength with full IF and PS should suit you well. 24/15 is doable before level 33 if you don't mind missing some IF until you grind out those last few levels.
Which weapon do you plan to use? That matters if you are trying to maximize your build and squeeze out every last drop of power. Personally, I love the morningstar. 18/21 is nice with it. The extra riding and athletics help to overcome the weapon's short length.