Adding New APs: Use Fortigate Controller Or FortiCloud?

We have sold may Fortigates, but are just now deploying our first FortiAPs. Should we be setting these up using the controller on the Fortigate, or should we use Forticloud?

What are the pro's and con's of doing it either way?

If I set them up on the Fortigate, will they show up in Forticloud automatically?

I'll be posting this on the Fortigate and Forticloud forums as I'm not sure which would be best :)