Salty as for the red gel I have another just like it. My 86 comp. It has the exact stripe package and grey wrap on the top side.
As for the floor they are all nailed from the factory. In time the nails rot and become loose feeling. My comp did the same thng but the floor was soft too... I must say the ol SS looks alittle naked with all her trim removed. But with all your hard work and attention to detail she will look like new. The boat looks so factory still perhaps the original stripes should be put back on. Sure the rainbow stripe was outdated but in a wierd way it looked correct.
I'd leave the bottom of the hull till later. You have enough to do getting her back in the water....