questions 66 convertible interior redo

just ripped out carpet and seats in my 66. i am wondering if there are some very common leaks spots. I noticed some rust on drivers side kick panel inner and outer rockers are a bit rusted nothing to bad. Floor pans from front to back seem to be in good shape all in all. I don't have much experience so just looking for pointers or common issues i should think about. Working on a budget so wondering what is most important to replace and in what order. Doesn't seem to have torque boxes in but seems that some water has been getting in maybe cowl vent loose seal near steering column, not sure. Thanks for any tips or advice.

Jeremiah

If it is ever in the rain then water comes in the plastic window(at least on ours) on the sides and will run down the framing of the top and into the side pannels