Put it this way: if every employee will receive 1099 distributions instead of a W2 paycheck, or if no W2 employee will formally be given equity to begin with, you're better off with an LLC.
If not, you were right to go for an S-Corp. It's just paperwork, and you're not going to screw yourself over with it. We're converting right now without a huge amount of legal pain.
We would start with 4 shareholders and have two people working full time to start out, so we could say "we" from the start. :-)