[Bozeman]

A reasonable rule of thumb is that runner runner draws are worth somewhere between 1 and 2 outs each. Whether closer to 1 or 2 depends on what sort of action is likely on the turn (and river). Also remember to discount non-nut draws.

For your particular case, you might have as many as ~10 outs, but I would significantly discount them (to ~6) because the overcard outs are particularly tainted, and the flush outs aren't perfect.

Craig