You are going to have a hard time doing it completely standard.
If you fly to the VOR and join the holding, their ILS-1 procedure (R-038 to DAL NDB) is more than 30 degs off for the base turn as well (outbound course 097).
If you fly the ILS-2, and coming from Sofia point direct to DAL the course is 295. Outbound course 006 in the base turn.
Hence, you have the same problem in both cases. The benefit of the ILS-2 (besides being obviously shorter) is that the MSA is based on DAL NDB and the leg from Sofia is in the 5000 sector. So I would argue that before arriving at DAL, adjust the heading a little so that you are able to join the base turn inside the 30 degs.