Also, do you have anything that requires high flow rate, spa, waterfall, etc?
If not, a 3/4 HP high efficiency pump should be more than enough. A 3/4 HP Whisperflo, will deliver about 70 GPM on an average pool plumbing system. That is about a 6 hour turnover which would allow for 4 turnovers a day. You might even consider a two speed and run on low most of the time to save some money.