Thanks for all the replies.... Consensus is to go with a custom sump and a FX5 canister. I will start building my sump and and updating the progress. Thanks alot guys.....
Here is the design I came up with for the sump. Needed help on the spacing between A and B as well as B-C and C-D. This is going to be a 55 gallon tank. Would apperciate any suggestions on design as well. Thanks