Sorry you are having to start her in daycare so early. Were you able to breastfeed? If you did and you could continue to do it you'd be providing her protective antibodies.
I personally would not get the rotavirus for 3 reasons. First of all, it is a hospital daycare and health care employees ( I would surely hope) know to diligently wash hands in between diaper changes to prevent the spread of the disease. Secondly if he does catch it, it is diarrhea. Miserable, yes but unlikely to cause lasting harm (we don't live in a 3rd world country where diarrhea does kill babies who get dehydrated and don't get medical care. The vaccine probably saves lives in those cases) We are only one of 3 or 4 industrialized countries that have put that one on the recommended schedule. Thirdly- both of the rota vaccines on the market are contaminated with DNA (or RNA I forget) from one or two piglet wasting viruses. One of the vaxes was taken off the market for a short time because of it but it was concluded that human babies wouldn't be harmed by the piglet virus. Well, all I got to say is SV40 was in the oral polio vax and is now found in human cancers so pardon me if I am skeptical.
Pertusis is a really difficult one. I did get that one for my son (but not my daughter yet, 14 mo) but I waited until he was over 6 months. I was a little scared last year while my daughter was under 3 months old because that's the most dangerous age yet even if you get a vax at 2 months, the baby's not protected (if you believe the vaccine works) until she has the other 2 at 4 and 6 months. From what I've been reading I think that virus has either mutated away from what's in the vaccine or is possibly parapertusis might be what everyone has been catching. How strict is the daycare about keeping sick kids home or at least separating them? Looks like MI had over 800 cases in 2010 and over 400 so far in 2011. Bleh. I wish we had decent paid maternity leave so babies could stay home until after 3 months at least.
As a healthcare worker, I worry sometimes what I have been colonized with (MRSA?) and have probably passed to my family.