With 26 S3s you can mine on pretty much every pool since stratum has had the bugs worked out on SHA-256.  I would use load balancing over 3 or 4 pools, choose your favorites or the 4 biggest after ghash (please don't mine there for the time being) and have CGMiner load balance across the 4 pools since you would be earning for the next 6 months.  Set auto payout on each pool to 0.5BTC so you don't get too much build up on each pool and also so you don't have tons of micro transactions.