Read. More than you have.
The answers are all out there, and the vintage Daytona is not an easy project. For that matter, building any watch requires a lot of research. Too many new members want to skip this part, and get into trouble by going down the wrong path for themselves because they don't know what they are really trying to do. The long-standing members of the site do not tell new members to read, or search, because we are being watch snobs or just like being hard on "Noobs". It's done because we want you to learn and know what you are getting yourself into. We could point you at countless threads where someone bought a part and didn't realize it wouldn't work with the other parts they had, or it forced them to go down a path with a build they didn't want to travel (like spending way more than necessary).
It's nearly impossible to give any kind of relevant advice on any build without knowing answers to a lot of questions that you will need to figure out on your own. For example, what is your budget? Do you want to build one yourself from parts, or want one pre-built? What flaws are acceptable to you (there is no such thing as a 1:1 perfect rep of any kind, especially a vintage Daytona)? You need to familiarize yourself with the model and the available options, decide which direction you want to go, and then ask for help if there are things you still don't understand or are confused about.
Just to give you a little insight as to why this is important, let's look at your dial question.
The best aftermarket Paul Newman dial is IMO the ingod44 dial for a v72 movement. So, if you want that dial, here are the challenges you will face.
1) Even though his site is still functional, ingod44 has seemed to have disappeared, so you likely can only get one in a M2M sale (if you are lucky).
2) You'll now have two build choices. Either build a v72 based watch (very expensive), or you can buy an ST-19 (aka Venus) based Daytona (the cartel Daytona), and mod the non working 6 o'clock subdial hand to fit the ingod44 v72 dial properly (there's a very informative thread about doing this already posted).
So, for that dial (assuming you can even find one) your two choices are spend a lot of money, or have a watch that still isn't perfect even if it does have the best available dial. Have no idea if either is an acceptable option for you.
Or, you could go a completely different direction if neither of those options sounds appealing. And that's why you need to do your own research, figure out what options are out there, and what path you want to go down. Members have written many posts about the builds they have done, why they chose to do it the way they did, and have posted pictures of the end results. You need to look at them and make your own decision about what's important to you.