Thanks for all the advice. Since I didn't know the outcome of all the modifications, I just went ahead and bought a small pump (Rio 600) and mounted just above the sump. I mounted it about 18 inches above the pump giving me approx 140GHP to the UV.

Also - since we are new at this, I didn't want to encounter any major complications we could not handle. I would rather it cost me a couple of bucks now than a few hundred later.

Thanks.