…ば…はずだ => If ... then perhaps ... N3
Speculation
…ず、…ず => No... but also no... N1
Explain
...ず => without doing N3
Determined, determined
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
…ば ... => If... N4
Evaluate
…ば .... => If... N4
Conditions (general conditions)
... ば => If... N4
Condition (hypothetical condition)
… ば .... => If.... N4
Condition (hypothetical condition)
じょうず => Good at N5
Ability
~によらず      => regardless of ~ N1