2X,
Shedrock
I think 70-75 spine should work for you.
Congrats on a fine bow.
The best wood arrows for the least cost will be the ones you make. You are then in control. Graphite have wider spine range, but you can order a mixed set (test arrows)from the sponsors you mentioned.
There are a number of other sponsors including Raptor Archery, Wilderness Custom Arrows, The Feathered Shaft, and Elite Arrows. I apologize for not listing more. You might take a minute to go thru the sponsors and check their websites.