The way I had heard the “4 fields” recommendation is for “permanent physical changes.” There aren’t many fields for "permanent physical changes (and I can’t recall any of the recent fields which would fall into this category, but don’t @ me 
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It was explained to me that the reason why this is recommended is because permanent physical changes are the most energetically taxing. When we deplete our energy systems our quality of life suffers, we can create other problems for ourselves, our desired progress sl¹ows down (because we have less energy in our systems to make our progress) and our experiences working with the fields suffer.
The tl;dr is if you’re in tune with your own energy system and can comfortably handle more than the recommended 4, go for it. There are no Morphic Police to put you in Morphic Jail. It’s just that it can be counterproductive to do more than 4. With morphic fields, less is more.
Continuing on with your post, some of these goals are not “permanent.” For example, your facial hair is going to continue to grow. Not permanent.
Some of these goals are going to be dependent on other of your goals being accomplished. For example, if you did physical face lift before you did bone reconstruction for symmetry, that would be counterproductive, wouldn’t it? And if you changed your bone structure through “symmetry,” maybe you wouldn’t even have a double chin anymore, you see?
If you open a cookery book, you might find several different recipes for chocolate cake–not only with different accent flavors but with very different procedures. If you picked one recipe, does that make all the other recipes wrong? No. Those are just different ways of making chocolate cake. It’s the same thing with morphic fields.
I’m going to recommend that you read:
What a beautiful cat you have on your profile pic; I would go with the previous answers, few fields are considered permanent and 
