Hey Bro,
Same with the one I wanted, common area. Poked and made it all worse haha, was the same on the other side, but the stability was still there, so a couple of small welds and used Isopon skin, high build primer, done. Got the other areas the side trim attaches to (in pics) back to bare metal, Jenolited everywhere, painted. Annoying at the time I painted gloss black to get it protected as nh605p was out of my dead budget! So check the side trim as it will have work for you :P
You one looks better than mine, still be prepared as Kink says, that rust is coming from the inside out, you need to get at the source.
If you love it and really want it, get it and sort it.