I think what you should consider, beyond the regs that jergar just mentioned, is "how much multi experience do I have?"
In other words, beyond the question of currency, which is good for singles or twins, consider challenging yourself with some "unexpected" single engine approaches (your flying partner pulls an engine to idle) if you don't have a great deal of multi engine experience.
Jergar, is that an actual, unretouched picture in your avatar???