It really depends on the time and energy you have available to put into a second dog. Separate training, separate attention, crating and rotating.
Any Husky is going to have hyper drive, and they easily become destructive if not exercised enough. I’ve found them to be more of a handful than any GSD I’ve owned.
Dobbies and Rotts are great energy wise, and crazy smart with how quickly they catch on to cues and handlers expectations.
No matter the breed, you’re going to have a ton of work to do with 2. And likely will have issues with in fighting as the pup matures. I’ve had both sexes at the same time, and opposite sexes at the same time. It was much less of a headache when they were of different sexes.