Need estimate on underside bodywork

[sweater914]

Hey everyone,

I've got a '72 914. The body is really clean topside. The floorpan doesn't have any big holes but the right side jack slot/hole has rusted through. There are some small pin holes in the floorpan and someone tried to band-aid a seat track.

Could someone give me an idea of how much it would cost/labor to replace the floorpans and jack slot?

How difficult would it be to strip everything out and corrosion proof the car?

Thanks for any input.