まんざら…でもない/ではない => (not) altogether; (not) wholly N3
Evaluate
まんざらでもない => not so bad... N3
Evaluate
でござる/でございます => By, with… N4
Honorifics
でございます => to be (honorific) N4
でございます => to be (honorific) N4
Respectful, humble
ござる/ございます => Have~ N4
Honorifics
.... はんいで => In scope N2
Scope
ずにはすまない/ないではすまない => A must be done N1
Potential, Possibility
~ないではすまない / ずにはすまない      => must; will definitely; can't help but to ~ N1
~いざ~となると / いざ~となれば / いざ~となったら => When it comes to; in such a case; if that happens N1
Evaluate
げんざい => now, current, present, present time N3
Time
なんでも…らしい => I heard it seems like... N3
Vague