Sanding and sanding tonight.
I sanded more sheet metal until I ran out of sandpaper, still plenty left to do. After I ran out of disc's for my DA I started doing some hand sanding in some tight spots. Around the driver side cowl and outer kick areas were not being friendly and it kept biting me.
I got them sanded pretty good but there was still a small amount of surface rust in some areas so I decided to spray those areas with rust converter. I guess a trip to the auto body supply shop is in order.