certainly, it would be fun for SPD!
i teach from a therapeutic perspective and nearly every student comes to me with some serious problem. i have one guy who, if he is on his back, can't put his head down on the floor. it's a good 6-7 inches off the ground, that's how messed up his neck/shoulders are! but, i have a specific program for him to do mon-fri, and he takes class every saturday with me, and then on sundays he takes the day off.
so, it can be done. and in my opinion, it particularly needs to be done when you need a consistent form of physical therapy to help realign the body!
the real key, though, is to find a very good teacher.
i always look for experienced teachers--with more than 5 years teaching experience--because they tend to have a good working knowledge of the body and have come across and worked with common problems such as sciantica and related.
from there, i tend to stick to certain styles of training because these teachers tend to have more of a grounding in alignment (rather than, say, a focus on meditation. each school is different and that is valuable and great, but if we're doing poses, i want focus on poses, not focus on meditation, yk?). Anusara and iyengar tend to be my favorites, though the teacher needn't be certified by these groups, just experienced in them for a few years.
i would, personally, go back to yoga after the birth when you feel up to it. because you have such specific needs, i might interview a few teachers and then find out if you can get private lessons (often, you can do trades for lessons as well as paying for them). you need at least 4 lessons.
you should get an individual assessment in the first meeting, and then in the first lesson, a specifically designed plan or sequence of postures for your specialized needs. at this first lesson, your teacher will go through everything in detail and discover what does and doesn't work for you. in the second lesson, s/he should bring a revised lesson plan, and go through that with you. this should be the program that you can practice daily. during the third lesson, you'll go over your questions and experiences of the practice and fine-tune any misalignments while you practice, and the fourth lesson will be a complete 'fine tuning' lesson with the teacher.
after that, i would recommend going to a gentle class with the teacher once a week or every-other week, and then doing your recommended routine every day that you can.
i would also ask the teacher that your routine not be longer than 30 minutes, and that your family gives you that 30 mintues. afterall, this is for your health.
of course, this is an aggressive plan for a lot of folks, but it DOES work. and, 4 lessons is the bare minimum--i usually ask students to commit to 8 or 10 depending upon their issue since alignment is SO important and i can make changes as the student improves physically (as the condition improves, actually).
so, i hope that you can find a really good teacher who can help with both shoulders and hips, with the stomach too because it needs work after all that stretching!
if you can't, i'll help you out.
best i can online anyway.