If I could pick say 100 people, my list would look something like this, with all people having appropriate degrees and say 5-10 years experience, and split 50/50 male/female:
20 special forces soldiers (Navy SEALs or equivalent)
12 engineers (2 each chemical, mechanical, metallurgical, electrical, architectural, & mining)
10 doctors (2 OBGYN, 8 other specialists, at least 5 of which should be surgeons)
4 botanists (with both field and lab experience)
4 zoologists (with experience in agribusiness)
Everybody would of course need to do a lot of grunt work, both inside and out of their area of expertise. Any big skillsets missing from that list? Clothing, I guess, but if the group wears crude hides instead of well-tailored clothes it's not the end of the world. And teachers, but it's hard to spare room for a dedicated teacher -- maybe some of the engineers could be college profs?
20 military might be too many, but I figure you need hunters at first until agriculture gets going, and defense against other tribes too. And 8 people dedicated to farming (zoo/botanists) might not be enough. Hmm.