What does のもなぁ mean?

Question

What does

してもらうのもなぁ　means?

It seems he's saying he won't ask him to do it 5 times in a row?

Answer 1

• 5回連続でしてもらう: "to get them to do (it) 5 times in a row"
• の: nominalizer
• も: a special topic marker used in place of は to add a "reserved" nuance. See this.
• なぁ: an interjectory particle which is similar to ねぇ but sounds more masculine ("you know", "hmm", "well", etc.)

The corresponding predicate is omitted, but it's mentioned outside the balloon (お互い大変).

でも流石に5回連続でしてもらうのもなぁ

≈ でも流石に5回連続でしてもらうのは…。

Still, getting them to do it 5 times in a row is a bit...