Det might be a little dicey. The electrification terminates just short of BEC. Rest of the stuff, which lies in WR, has not been completed. This includes the following:
- Link from Det to Chanderiya. FWIW, they've drawn the line to just short of the northern branch out of Chanderiya.
- Berach Jn Cabin to Chanderiya bypass chord.
- Berach Jn...
more...

Cabin to Chittaurgarh Jn.
- Chittaurgarh Jn to Chanderiya.

If other major junctions are to be considered (Rewari immediately comes to mind), the way they seem to do this is to electrify the entire junction complex as one. Of course, this would all have to wait on whatever contractor has most recently bagged the RTM-COR-GQLW project...

Most likely, some diesel link will drag a WAP-4 to Ghosunda, and the actual CRS (December?) would cover the route till Khemli, hopefully Debari. This is reminiscent of how the Adarsh Nagar - Det CRS was actually truncated to Nasirabad - Mandal, though nobody would be more pleased than I if I were to be proven wrong on this.

Please let me know if something has changed, I last travelled on this route a week back :)