I'm in a 10 team keeper league, keep 5, and I found it to be very easy to pick up good pitchers during the season. I also thought is was very easy to fill holes in your hitting too. My point is, you are in very good shape with the team you have now. I'd take a couple more SPs and then fill you roster with RPs and high upside guys. If they don't pan out, then oh well. Just keep your eyes peeled during the season for good adds. And don't be afraid to drop someone either. There will always be serviceable players in FA.