Help with Paladin Build

I’m changing my build from a Dex-Rapier build that I just pumped ADP/END/VGR through the roof, to a Paladi style build, where I use mercies to buff myself (so not super interested in the lighting spear spells).

I’m currently level 165, and am trying to figure out what to level stuff to. I started as Swordsman. I still want to play a quicker build, so I’m thinking the Heide Knight sword, and to switch between my chime and two handing it.

What should I level my stats to now, and as I level up more what should I focus on?