NGFW, Wifi and Switching with CISCO Gear for SMBs

Hello Together,

i founded a small it company and we mainly supporting SMBs.

We born the idea, that it would be great to have one main manufactor for network gear like, NGFW, Wifi and Switches. Regardin partnership, pricing, knowledge etc...

I have some FortiGate, HP Procurce, Unifi background and as mentioned bevor, it would be nice to focus on one manufactor. Is this a good idea or can i say the cisco asa, switches and wifi products are all very different in usability and i can use different manufactor anyway. (is there a equal cli or gui on all three categories?)

Thanks for any feedback!