Get your drop offs in first before the quarter patches, they may need some trimming or adding depending on what drop offs you got.
From what I heard some drop offs are shorter then others for what ever maker there is, mine came with the car when we got it and I don't know the maker of them.
I had to trim around an 1" +- from front to back on my trunk drop offs once I got my quarter fully in place and welded to the drop offs.
Here is how much mine were off compared to the original quarter.
You can see my purple marker line here as to where the drop off needed to be trimmed with the new quarter.
You can see here how much needed to be trimmed on the passenger side.