Currently, it is my understanding that the maximum size party for experience a
DAS pass is 6 persons (the DAS pass recipient plus 5 more persons attached to the reservation party). I may be wrong and DLR may have changed this maximum party level. I strongly recommend you research this issue on
Disneyland's website. It has very good, updated information. You can also pre-register for DAS and that may eliminate time waiting inside the parks.
Also, there is a Vlogger, Chris Provost, who hosts Provost Park Pass. He has several informative DAS videos Disneyland related where he tours DL and DCA with a young man with cerebral palsy.
Last year, at DAK in WDW, there was a group of approximately 20 people trying to use a DAS pass to get the entire group through the lightning lanes. I personally saw this group twice while at DAK. The first time was at Navi River Ride and the CMs let the entire group go through. A woman in front of me with her husband and two disabled children turned to me and said I thought there was a 6 person maximum. I nodded and said that was my understanding too. She was perturbed. Interestingly, the second time I saw this 20 person party was at Kilomanjaro Safaris. This time, there was an animated discussion between the DAS pass party and the CMs off to the side, because it was clear from the few seconds as walked by that the CMs were not going to allow 20 persons to walk through the
lightning lane and they were limiting the DAS pass party to 6 or less.
Frankly, it appears to me that you should be fine. I bring this example up because it appears that the DAS pass party size can be modified by CMs, but I do not like guests putting CMs in a position to ask them to break Disney parks rules. I think that is terribly unfair to the CMs to ask them for permission to break the rules, let alone the other guests that adhere to the rules.