Just my opinion, but I don’t know that it’s best to request a guide rather than explain to DSS what kind of guide you would like for your family and have them pair you. And I can’t imagine that in that role they would have any bad guides, just maybe someone that didn’t mesh, at most.
For example, we wanted a guide who would ride with us and would be a good fit for our family dynamic and touring style. If the highest reviewed guide didn’t do that and we requested them, we would have been disappointed.
We liked our guide so much we requested them for our next tour and would definitely use them in the future, but I’m glad I let Disney do the matching on our first tour.