City, where exactly is queen city? Is that a NY thing?
It's goign to be tough, and it's NOT going to be a professional finish but it IS going to stop the rust everywhere but in the trunk... Unless you take your deck lid off and take it to a shop it's going to continue to rust from the inside.
That rear lip has already got rust on the inner edge working it's way OUT from the inside exactly like what you see on the outside working it's way inside, and THAT is the hardest part to make stop rusting.
You can scratch the inner and outer lip and paint it but that will not stop the rust coming twards the outside from inbetween teh folds of teh metal.
The tinkling sound you hear when you open the trunk is pieces and parts of the adhesive that the factory glues the two frames together with when they crimp the lip. It get's brittle and the flexing from opening and closing the trunk cause it to flake off and roll around...
OK, The trunk lip is going to be simple and you aare going to need the following:
One 8 ounce can of Por-15.
Two Pints of Acetone {Buy it at Wallmart or the BX/PX/NEX or ANYWHERE but a Paint shop where they will charge you WAY more than necessary...}
A NEW trunk weatherstrip from MACS or Dearborn Classics, Along with a tube of Wetherstrip Adhesive, (a small tube...)
A few sheets of 80 Grit automotive grade sand paper {not the hobby shop/wallmart style orange or red sheets, but automotive grade, It lasts longer

}
A couple sheets of 180 Grit, and a couple sheets of 220/240 grit.
That's pretty much all you need to start. Let me know when you've got it all ready and We'll get on it.
The wetherstripping can come last, so just get one ordered for now.
We are going to do Chemotherapy on your Galaxie, and get the rust to go away. It will help preserve that beauty until you can get her to a restoration or whatever you choose many years down the road.
Blasting the Trunk Lid is a MUST, but only the inner and outer lip, then there should be some rust mort added then some washing then some pouring of some Por 15... It's not difficult but it is sort of complicated, that's why that one part should be done at a shop... It might cost you a few bucks (maybe $150) for them to just blast the edges inside and out, and blast the area between the two halves. But after the blasting is done you can do the rest.
Let's see what you can get together first. Look for a place to blast your deck lid edges. and gather the supplies and we'll start on the trunk sides.
Gary