SD-WAN

I've installed the latest EVE NG CE as an ESXi VM. I'm having issues running the SSR in EVE NG. 

1. I followed the EVE Cookbook but it's for the package based .iso. (128*.iso) Does it matter?
2. How do I use the .qcow image in EVE NG? Obviously the Cookbook instructions dont apply for the .qcow image.
3. Why would one choose the .iso over the .qcow?
4. When the SSR boots it appears all 8 network interface are 192.168.128.1/24. Can I edit the IP on ge-0-0 to fit my lab IP scheme?
5. The Juniper .qcow install instructions talk about making a cloud-init iso. Is that necessary?
6. Another set of Juniper instructions speaks about making a onboard-config.json

At this point I'm confused. Any help is appreciated. 

My goal is to have an EVE NG topology with a Conductor and 3 or more SSR routers. 

I've only used the iso method. You just make the iso into a cdrom and install it to a qcow disk. I generally make a separate conductor and router images in EVE, but you don't have to, especially if you do the automated bootstrapping and onboarding. You can re-ip things as you see fit. You don't need the cloud-init or onboard-config.json - they are used to bootstrap an ssr router and automate onboarding to the conductor.  I like to get a feel for how things fit together before automating it.

https://www.juniper.net/documentation/us/en/software/session-smart-router/docs/install_qcow2_deployment/
https://www.juniper.net/documentation/us/en/software/session-smart-router/docs/initialize_u-iso_adv_workflow/#onboarding-configuration-file

EVE has some instructions on their site as well.

https://www.eve-ng.net/index.php/documentation/howtos/juniper-sdwan-128t/