I decided against the sump - as beautiful as it was, my tank is really thriving, and honestly, until it isn't, I'd rather not spend another $400-$500 on a new sump and skimmer.
Things can change quickly though, as I stated a few posts ago, that I'm getting more into SPS which may require another look into better filtration and skimmer.
On the other hand, I find out in January if I am going to Japan for 1+ years, so I may just hold off until I find that out for sure as well.