Like I needed confirmation on the 512 but I tried it on again today and absolutely love it.
Annoyingly they mentioned I could put any (or none) amount down with interest free installments for up to 30 months. I have about 40% saved so it was tempting but they don't move at all on price so probably not worth it as it looks like it can be had for thousands cheaper on grey or used markets once I have the full funds. But like I said... tempting.
Also tried on the 000 which looks awesome on others but not sure if it's too thick for my 7" wrist. I think this watch looks incredible with a rough leather strap, jeans and boots and showing signs of wear. So I may consider picking one up in used and worn condition (e.g. scratches, minor dings etc) if I can find it for a decent price. I wouldn't be picky b/w 000, 005, 111 or 112 which I assume are the cheapest on the used market.
A couple of pics...
Stunning 512 Warning: Spoiler! (Click to show)
I doubt if any dealer will give you 0% financing and a discount.
All the Luminors you mentioned are readily available - high 3K to 5ish, depending on age and papers, etc. Check out TRF, P.com, TZ, etc.
The height of the Luminor is something you need to get used to, although it's really no different in wrist presence than several of the deep rated dive watches - e.g., Omega 600m, etc. or the Frill's fantastic DEEPSEA shown above.
There are 512's available also - probably cheaper than list price.