The Pavo20 is great for the price and for someone trying to start out with the DJI O3. It can give up to 5 minutes of flight time (Using a 2S 550mah lipo). Attaching the O3 is quite straight forward and simple. Although I think the Pavo20 is a bit underpowered and quite loud for a 2 inch quad.
It is my first drone and I really like it because I can fly it everywhere. I think you should better buy any of the pavo20 PRO because sadly this thing has really low power and acceleration which is totally fine for a cinewhoop.