I am not the OP, but:
All the RP players?
Sure, it can handle those easily.
All the RP players, plus a bunch of non-RPers who still prefer to play on an RP server because of the atmosphere, plus a number of players who want to play on whatever server is the biggest, plus a large number of random players - new and old, plus a few gold sellers, plus a few anti-RP trolls?
That could get problematic....