Rekordbox Video Issues

Only purchased Rekordbox Video yesterday and was hoping to use its features at an event last night, however couldn't figure out the most basic requirement so hoping to get the answer.

Equipment as follows;

Controller - XDJ RX 

Laptop - MacBook (Sierra 10.12.5)

Rekordbox - 4.5.0

Projector - Optoma GT1080E

GoPro Hero 4 Black

1. Apologies if this is a pretty stupid question and the answer is simple ...When I work at a gig I have to be in Export mode to link Rekordbox to my XDJ ...however I cannot then switch to performance mode to use Rekordbox Video or i will lose my link to the controller. 

So how do I link Rekorbox to my XDJ to perform on the controller whilst using Rekordbox Video to play slideshow images and visuals at the same time ?

2. Are there any visuals built into Rekordbox Video ? Where is the best place to purchase visuals from ? ...are there packs you can buy via Rekordbox ?

3. Are there music video packs you can buy via Rekordbox ? ...or a subscription to get videos from somewhere ?

4. My MacBook only has 1 HDMI ...however I need 1 HDMI for the projector and 1 for the GoPro. Is there another way around this ?

5. In Rekordbox Video, when I select CAMERA the only option that appears is FaceTime HD Camera, GoPro doesn't appear as an option ...have looked at the settings but Rekordbox Video can't seem to find the GoPro when its attached directly by HDMI to the MacBook.

Any help much appreciated