This one looks great. Especially the radios and jerrycan racks. And the figures!
You actually have more potential variants on this sprue.
I assume the large mast antenna on the sprue is intended to be the 8 metre extendable antenna. When it comes to the SdKfz 250, the mast antenna wasn't fitted in addition to the frame antenna - there was just a 'normal' antenna. The mast antenna replaced the frame antenna on later versions of the SdKfz 250/3 which were intended for the Luftwaffe liason role.
Also, apparently, Rommel's vehicle was an SdKfz 250/5 le. Beobachtungspanzerwagen and not an SdKfz 250/3. The former had a rotating observer's seat behind the driver. But sources vary.
The mast antenna was carried by the SdKfz 251/3, in addition to the frame antenna, when it was in the Luftwaffe liason role. Not all versions of the SdKfz 251/3 carried it. Of course, different versions of these communications vehicles carried different radios, but that's not going to bother most people.