Body Work Expertise Needed

Okay you body guys & gals, I'm in need of some advice on the body work, primer & paint for my Dart. I started this project taking the car down to bare metal, then cleaning with degreaser/body parts cleaner, then applying just rattle can primer (not sealer) to the car. That didn't work out at all because after a little while (couple of weeks) rust started popping through the primer in several areas. I heard about rust converter that could be applied to bare metal and so I bought some of that to try out on the next pieces I stripped (hood & deck lid.) That didn't work out at all - went on very uneaven and left rust residue in several places. I visited the local NAPA to get some TRIO Etch Primer Sealer based on some input on another post, spent $115 for Twin Etch (they didn't have TRIO,) a product called CS279 Enamel Primer/Sealer, and the reducer required. This was supposed to solve all my problems according to the NAPA guy. I would use the Twin Etch over bare metal, rinse with water, & spray the CS279 on top, then I could address areas needing putty & filler later.

I sprayed the deck lid with the new stuff, then contacted Martin Senour direct because it just didn't look right. It's nice and shiny and really looks cool, but it doesn't look at all like a primed piece and I was concerned about the body filler adhering to it.

The rep at Martin Senour gave me totally different recommendations, told me to take back the CS 279 & reducer and get my money back (which I can't because it's all opened now.) Here's what the rep's suggestions are. If there's anyone out there that can confirm (or reject) this advice, I'd really appreciate it. I am hesitant to go back to NAPA and drop another $100-$200 on stuff that turns out not being correct. I'm also getting tired of stripping & having to redo parts again and again.

TWIN Etch, then Tec Supreme Body Filler, then TP530 Tec/Prime, then TRIO Prime Etching Primer, then basecoat & clear coats.

Thanks!

Pam