Yes you are correct. The AT9 has a built in switch. If you need more outputs than 4, the only switch that I know of that will work with the AT9 is still the Zinwell WB68. This will give you 8 hookups.
I could tell from your previous posts that you have aimed a dish before. But the AT9 is a completely different animal. If you do not allow for the more precise aiming of the Ka band, it is possible to have great signal strength on 101/110/119, and have next to nothing on 99/103. We discussed the dithering process in your post regarding the SF95 meter. Follow the instructions precisely, and be very patient. Check your 99/103 strength following your install, and try again if it is not suitable.
Good luck with your project!
Al