Yay he's dressed and got his nose out of the front door !! Going back in to school for rehearsals so hopefully will connect with others in year 11 in the same boat. School with out the lessons - his idea of heaven :):)
Yes makes sense for uni visits now if you have an idea of what you want - but there is plenty of time if not. Please don't worry if this isn't on your radar yet. And I don't think you necessarily need to do a large number of visits either (depends on how broad your course is and whether you have set preferences between campus/city or distance etc as to how many you may want to see). DD1 went to four initially, then went back to the favourite two at offer days to decide on the first choice. DD2 was very restricted on time (doing IB !) and also her school had a maximum of two days allowed for uni visits per term so only went to three initially, then wen to another for an offer day that she hadn't visited before. Offer/applicant days (usually held in Jan to April of year 13) are great and much more focused and I know some applicants even short list 5 to put on their UCAS form and only visit for offer days. It depends very much on how much you know you want before hand.
My only other advice would be think course, course, course. Courses vary so much from uni to uni in both content and style - I have seen so much discussion on mumsnet worrying about standard of accommodation etc or the town but please do consider if the nature of course is right for the DC. That is most important. That is also true of Oxbridge - the courses at Oxford and Cambridge can be very different for the same subject
Sorry for the ramble !!