気にもならない => it's no use; can't do N1
Evaluate
~ぶんには(~分には) => as long as ~ N1
気味 => -like; -looking; -looked; tending to ~ N2
に気がつく => to notice; to realize N4
くらいの => Approximate~ N3
Emphasis on degree
いつかの ... => Previously N4
Time
~のは…ぐらいのものだ => only (emphasis) N1
Limit
というのは => because N2
…ばあいをのぞいて => Except for N2
Exception
…からいいようなものの => It’s a good thing that… this time… N1
Criticize
…の…ないの => thinking whether or not to do something... N2
Position, perspective
... ないものは ...ない => is not entirely impossible N3
Ability