だとすれば => in the case of N2
Deduce
... を... とすれば/ ... が... だとすれば => in the case of~; assuming~; if A then B (conditional) N2
Consider it
どれですか => Which one N5
Confirm
... とすれば => point of view N2
Position, perspective
だ/です => to be N5
~仮に...とすれば / としたら / とする => ~If..., suppose... N1
Condition (hypothetical condition)
これだけ … のだから ... => To this extent... N2
Emphasis on degree
いただきます => to receive N4
Benefit
まだV-られない => Not yet ~ N4
Ability
これだと => If/When (it) is this N2
Evaluate
それまでだ => If… then it's over N3
Limit, limit
これまでだ => only; just; nothing else N1
Exclamatory