Understanding this expression and how it relates to what comes after


I'm a bit confused with this expression 「私も上等じゃない」 as well as how 良く出来てるよ
connects to it immediately after. The text in question (apologies if the
situation is still vague):

> 屋上から街を眺めながら……世界の終わりを想像するなんて……。
>
> でも……。
>
> ……。
>
> この格好でこんな年頃の少女だったら……まぁ考えてそうかも……。
>
> 世界なんて滅んじゃえばいいのに……とか。とか。
>
> みんな死んじゃえばいいのに……とか。とか。
>
> だから、まぁ……そういった意味じゃ、 **私も上等じゃないですか** ……。
>
> **良く出来てるよ** ……。

I'm aware of the sarcastic use of 上等 that じゃないか often follows with, but I'm
not sure if that still applies here as this is all monologue (and not
describing someone else's actions). Is the line essentially saying how she
fits the bill described (since she's staring down at the city thinking about
such morbid things), or how she is perfect in that sense of being morbid,
dark? If so, how does 良く出来てる make sense here?

My translations of the last two lines are:

"In that sense, I'm quite the perfect match here, huh?"

"A lot of time was put into my character, you know." <- a strange meta joke?

