I believe
@710Coils said that he expects the new shipment of coils to arrive today, and I believe the Vrod coils are included in that shipment. You can also send him a PM and get an invoice for a preoder if you wish. Just to make sure you don't miss it in case they sell out quickly, and it will ship to you pretty much as soon as they land on his door step. Is that all correct, Shane?
Any coil that works with the Vrod will work with the Showerhead as well, so no need to worry there. The SH can take a wide variety of 20mm coils, it's the Vrod that's picky. I think it's a good idea to go ahead and get a Vrod compatible coil in case you ever decide to upgrade in the future, plus it's not like they're any more expensive.
A FP paired with an Auber RDK-300 is the best of both worlds. You're making the right decision.