Thanks for your replies!!
I don't want to invest that much cash on this, but I have time and good motivation!
Parting out this Rhodes isn't an option for me, i don't wan't to do that, this is a very complete piano and I don't wan't to make money over it, i'm just a Rhodes lover i think!
I'll continu my process, last week end I cleaned the bottom case, scrubbed the guide pins (That was badly rusted), changed the tine/tonebars hardware, cleaned all the keys. This week i'll be blasting all the tines/tonebars (It's free, I make this a my job) and after that, this will be the ultimate test.
My only concern is that the tuning springs can't move, I have to find a product that could remove the rust between the tine and tuning spring.
Thanks also for the ebay link, but i'm in canada and I can't see the auction.
Last question, is there a structural utility of the ''Crossbrace'' on the harp between the tines/tonebars and pickup section? I remove the 2, and I don't see any structural weakness. Maybe this is when we move the piano?
Here's picture of the process :


