Let the Victory play all their games at Telstra dome, you hear many AFL clubs say that the break even point at Telstra dome is around 30,000, I would assume the Victory would be the same, why wouldn't you want to fill a 20-25,000 stadium every single week get a good return rather than be concerned about losing money if you don't get above 30,000 people at Telstra dome.
Scrap it all, develope a new stand at the existing Athletic track, that can hold the Storm and MFC Admin and Training Rooms, where not going to use the playing arena anyway, and donate the savings you will have to the MFC and Storm.