Leave as Single Family or flip to Duplex

Does it make more sense to leave as a single family or convert to a duplex? The reason I am asking this, is it already has a second kitchen in the bottom level. It is a split entry if that makes any difference. 

This deal is about to begin its rehab and I am not quiet sure what the best approach would be here?

Any help would be great because this is currently my second deal that I am working on.

Thanks in advance