Recommended ways for leveraging roofing / GCs for DIY solar projects

I have a pretty solid grasp of how to design and configure a grid-tie system, and how to do all the electrical wiring myself. However I’m not very experienced with working on a roof. I’ve inspected solar installation on my ~20 degree composition shingle roof, but are not confident at all up there.

So I want to hire roofing or GC to do parts that I’m not comfortable with but they are allowed to do based on their license (California), while I do the electrical which I’m allowed to do so as owner-occupant.

I’m thinking I can offload things like installing rack and lifting panels to the roof. As well as installing permanent ridge safety anchors. While I do things like pre-wire all the microinverters, running AC down to the combiner panel, leaving only final connection of the solar panels.

• Is it easier to hire this way than solar contractors? From a scheduling & a convincing them this is worth their time/not a big liability perspective. Roofing contractors are pretty easy to get estimates from and schedule for re-roof. However I do know that some trades in the current remodeling economy really do not like taking the liability on handling expensive materials when they aren’t also earning the contractor margin on them.
• What are other ways I can approach this?

I’ll post the full plan that I came up with as a comment to leave this post a readable length.