Don't know of anyone in that area. Sorry man. The spear is my favorite weapon and think it can teach a lot about the different ranges of combat and timing, with a good instructor who knows its more than stabbing
Hope you get a chance to study it.
You're not gonna want to hear this, but I would concentrate on your shotokon unless you are at least a black belt. The footwork is very important with the spear as with all weapons, and it is a lot different from shotokan footwork. It could lead to a lot of confusion both with the spear work and your shotokan.