M1ck,
Is there a possibility of just backing out of the bid? $600.00 seems pretty steep to me. I think I put together both of my plates for about the same amount by shopping and catching deals and sales. My OMS Al plate and harness were had on special for $120.00 and the wing was on sale for $149.00. My doubles rig is a Zeagle plate and harness from
Scuba Gear Scuba Diving Equipment Discount dive gear and Wetsuits Cheap online. I don't remember the price, but Larry helped me with that and pricing. I bought the doubles wing used on this board. I am not saying to forego Tobins gear, as I hear it is great stuff. He gives some very good advice and you should contact him if you are considering his gear.
Good luck and Safe Dives
Charlie