という意味だ => This means... N4
気味 => -like; -looking; -looked; tending to ~ N2
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
[気味「きみ」]だ => Like A, Looking like A (is happening) N2
Adjectival, Descriptions
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
どのくらい => how long N5