What I have always thought is that you keep them separate but just kinda simmering, like the Steiner/Joe feud. Give Angle some time to get acclimated with new styles and a new ring, let Joe keep steamrolling, all while giving each other shit. Give one of them the title to make it even bigger. Me? I'd get cute with time limit draws or something, then iron man/two out of three falls just because Joe taking a fall after being a monster for some long would be HUGE and it wouldn't even end the match.
TNA from probably the FSN Impact days until Dixie's final form had a deceptively deep roster, consistently, so it isn't like they ever had a shortage of guys to feed either of them for a few months.