I also have a lot of experience with State Farm, although I am in the Midwest.
You should avoid talking about the policy other than to confirm whether it is an ACV or RCV policy because in most states, you have to be a licenced agent to discuss policy specifics.
State Farm is all over the map on what they pay and what they don’t. You will generally get a better outcome with a Cat adjuster than a local desk adjuster but there’s no guarantees. Assuming they approve the roof, some of the stuff they will try to not pay is flashing, trying to tel you it can be “re-purposed”. Simply explain that by the time the crew pulls the felt out from underneath it won’t lay flat anymore so will have to be replaced. Get before and after pictures to send with the invoice. Make sure you know what code items are required in your area and have documentation with you when you go to to the adjuster meeting. If your city/municipality follows IRC2015 for example, it clearly specifies that ice & water and drip edge are required and states how much and where. You may get that included just by showing the adjuster the proof, especially if they’re a cat adjuster from elsewhere. If they won’t pay it up front but tell you it can be collected on invoice AFTER the roof is done, make sure they repeat that to the customer so that if they later refuse, it becomes a problem between the customer and SF NOT between you and SF. Just tell the adjuster you prefer to get all this understood up front so you don’t have to file a supplement later (which they hate especially as busy as they are now).
Most important, make sure the customer knows what they should pay and why. provide them with the same info you give the adjuster. It’s the homeowner that has the insurance contract with SF, not you. Don’t let the customer blame you for anything SF won’t pay.