Dont put too much in.
I suggest 10% to 33%

The ROI profile is very difficult to determine, especially as there will be some overlaps for the BTCD revenue shares
My sense is that the ROI for Supernetwork will be less than for BTCD, but there is a chance for it to have some really good short term gains and it will be less risky just due to the amount of BTC I expect it will have mostly sitting there. Of course the wild card is what new services will new coins bring to Supernetwork. I think the best and brightest will be wanting to join, so that means the best services of unknown types. The click revenues will be going more to Supernetwork than BTCD, that is only fair, so this is the wild card factor in favor of Supernetwork

The fact that Supernetwork supports a crypto unification cause might also be a factor. My recommendation is based purely on expected financial ROI, adjust upward if you are wanting to support the unification cause

James