Hi, Definitely optimistic for you. How many grafts are you getting?
Make sure to start medication after your surgery. Finasteride every day or every other day, don't listen to some of the fear mongering you'd find online regarding it.
Between the surgery and starting medicine, you'll have a great result.
Shockloss is only temporary, and it's likely those thinner hairs would've fell out to grow back thicker anyway once you went on medication.
Regardless, rooting for you.