68 Barracuda floor pan rust advice

Hi all, been reading this forum for the past year since I picked up this car but just joined. Looking for some advice on best way to address rust in the front floor pans. The rust is fairly localized in the grooves although there is some deep pitting outside of them. Most of the pan looks in pretty decent shape (most of the brown stuff in the pic is carpet glue). Do you think it's best to cut away the entire section and replace with aftermarket steel or do some more localized patching. I've seen videos using a combo of POR-15 and fiber tape but that obviously wont add much in the way of structural stability. New to this, it's my first project. I do have some experience welding but don't currently own one (might be a good excuse to finally buy one!). Appreciate any advice.

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