I'm in a very similar boat, I had my heart set on an URSA Mini 4.6K
But then as time went by, my brain gradually took back control and I went for a Sony PMW-F3 instead.
Basically is like a heavier FS700, but waaaaaay cheaper (no 4K or slow motion either).
I too am eagerly waiting for the BMD VA!!
Had to rent the Atomos Shogun on a few occasions :-/
Very tempted by the Video Devices PIX-E5! But doesn't make much sense to me to spend even more on a recorder than the camera itself cost
As a FS700 owner, you really should be considering the Odyssey to get the most out of your camera. However... that then pushes up the total cost to be scarily close to FS7 pricing territory which I view as a far far better camera.