I am planning to buy 50 TL-SG2008 and also APs from the EAP series which are supported as I can see,.Will I be able to manage those without a gateway?

I have two T2600G-28TS which I want to try and manage using an Omada Software Controller, so I can evaluate changing the rest of the current HP infra with TP-Link. I set up the software controller on...