PoE Crackling Lance, Aegis Aurora, Templar builds

I'm going to do some party play with my friends who just want to chill together. We aren't doing anything too juiced but I thought it would be nice if our builds meshed well together at least a little bit. The main idea for my build was a lightning/cold crit character that inflicts max brittle and shock to help everyone out. Here is the build I need help with making it make more sense. Mainly the belt and rings kinda suck. I also don't really want to use ashes but the reservation is just way too good. Also also I don't know if the lack of move/cast speed will feel bad. [