its hard to say without knowing exactly what you will be keeping. Even in the category of "sps" corals... there is a huge(!) difference in water flow needs between montipora digitata and Stylophora pistillata, eg.
To buy/build water flow, lights, etc. before making a very specific list of species to be kept is a common mistake.
That all said... the three pumps you named sound to me at a glance like around 3000 gph after some plumbing resistance.
If that's so... its not even remotely enough for most corals you will want to keep. It would give you only 8 modest tees on a manifold: about half or less than the average needed.
20-30X turnover is a decent goal/start indeed... even more please if you want Acroporids and the like
