From experience I will say this:
Do not blow it all on a case.
Why?
Because when you grow tired of the watch (and you will), a used Phong case is not worth a whole lot except right here. Right here = this forum or others like it.
What is so great about a Phong case?
I do not really know but everyone says they are very good and have super good serial numbers.
You need proof?
Ok, I have a Phong 1655 case and it is very good. The serial numbers are super good...but they do not show.
The Yuki dial recommendation is good.
Why?
Because they are relatively inexpensive and pretty good overall. If you get a dud, sell it or send it back and buy another one.
The 1560 is a good choice.
Why?
Because a Yuki 5512 dial will fit a 1560.
Something else...iirc most high $$ aftmkt 5512 cases are made like the later cases...a little bit thicker with an O ring under the crystal retaining bezel etc and the 1560 came in thinner cases without the top O ring etc, etc.
What I am trying to say is:
No matter how much $$ you spend, you still have a Frankenstein and a Frankenstein with a $1200 case. $1000 movement, $500 dial, and $500 bracelet looks just like a Frankenstein with a $500 case, $200 movement, $110 dial, and $150 bracelet. The only difference in actual worth is the 1560 and genuine bracelet.
Go low to medium $$ the first time around and see how you like it.
Why?
Because a monkey wearing a $4k Tuxedo is still just a monkey...and a $1000 monkey beats a $4000 monkey.
I rest my case.