Probably.

I'll go ahead and change them to [adj-pn}
There are also
  [adj-f]: 絵になる, 金になる
and
  [adj-pn]: 勉強になる
Should all three be [adj-f]?

https://en.wikipedia.org/wiki/Japanese_equivalents_of_adjectives#naru-adjectives

Looking at the above, I see なる-adjectives are generally regarded as 連体詞, and hence we'd have them as "adj-pn". I'm afraid I'm rather sloppy about this.

With an ngram count of 1312972, (b) seems like the obvious choice.
The words
  主なる, 俗なる, 内なる, 外なる, 奇なる, 次なる, 絵になる, 金になる
have the PoS [adj-f], while
  切なる, 単なる, 大いなる, 如何なる, 妙なる, 尤なる, 更なる, 母なる, 聖なる
have the PoS [adj-pn].
Is there a reason for this, or should they all be [adj-pn]?

GG5, etc.
華麗なるギャツビー - The Great Gatsby
華麗なる門出 - A Start in Life
.....

(a) nothing 
(b) create an entry for it, e.g "(adj-f) The Great, etc. (in film and book titles)".