…ず、…ず => No... but also no... N1
Explain
いささか => a bit N3
Evaluate
さ => -ness N4
...ず => without doing N3
Determined, determined
さえ/にさえ/でさえ => Even N3
Not only, Not even
さあ => well N3
Suggestion
ずに => without doing ~ N3
... はずみ.... => So N2
Result
~ににあわず (に似合わず ) => ~Different from N1
Evaluate
さえ/でさえ => even; so much as; not even N3
...さ => Sentence-ending particle N3
Exclamatory
させてください/させてもらえますか/させてもらえませんか => please let me do N3