VA is adding a separate trike endorsement in July. MSCV.ORG puts on bike and trike courses in centeral VA. Ranges are big enough for either course, and completion of the road test earns you the endorsement from the DMV. Classes cost the same. Don't know yet whether the endorsement costs the same.
I don't know if this is feasible for you, but will AZ honor a successful class and road test from another state?