I strongly believe that the uproar over possible connections between autism and vaccines of whatever kind is merely fake science. The main consideration here is that vaccines provided through doctors come from established, well-verified sources, while "vaccines" through private channels contain unknown substances.
Autism is not caused by vaccines. It has even been diagnosed in children who have never received any vaccinations. The current thinking is that it may be a result of a genetic abnormality or mutation, present from the time of conception. A family member of ours has an autistic child, and that's what they have been told from several sources, after extensive medical examinations.
Of course you're aware that there are different vaccines to prevent different diseases – measles, chicken pox, polio, diphtheria, smallpox, and tetanus, to mention just a few. I don't know your Barry, but if he is not a qualified M.D. and is dispensing non-standard vaccines, he can get into big trouble for practicing medicine without a license.
Bottom line: Get your vaccinations from a doctor's office. Most elementary schools require that the children have received at least the most common vaccinations before they will be allowed to enroll. In most jurisdictions an exemption for serious medical reasons is available. Some jurisdictions will also allow exemptions for religious or "philosophical" reasons.