くらいの => Approximate~ N3
Emphasis on degree
たるべきもの => have the capacity to be a... N1
Of course
からつくる/でつくる => made from; made with N4
てくる => to start ~ N4
Situation
どのくらい => how long N5
たるもの => Those who are A, That which is A N1
Adjectival, Descriptions
てくる => Already... now (Appearance) N4
Situation
~のぼる  => To increase N2
Reach level
~ばよかった/~たらよかった/~ばよかったのに/~たらよかったのに => If only N3
てくる => to continue to now N4
Continuous
てくる => ...Approaching (Movement toward proximity) N4
Time
~く/ ~にする      => to make something ~ N4
Add meaning