I know there are only the 3 or 4 dubs of the first episodes and the rest of the episodes being provided subed by Hulu. But are there any plans for dubbing the rest of the series ?
The entire show has already been dubbed. Both seasons.
If you want the rest of the dubbed episodes, you either need to buy the physical discs or get a FUNimation EVS subscription here on this site.
Subscribe here: http://www.funimation.com/subscribe/anime
Technically the rest of the dub isn't out on the site for EVS users until February 4th
Check the schedule. It's always up to date on what's upcoming from Funimation about two or three months in advance