... 前に => Before ... N4
Relationship before and after
... 前に => ... in front of, before N4
Relationship before and after
前に => before; in front of ~ N5
...もらおう => Please... N4
Benefit
を前提に => On the premise of N1
Premise
ておられる => ( Honorifics) N3
Respectful, humble
手前 => considering; before; in front of; one’s standpoint N1
~[前「まえ」]に => Before N/Vる(occurs/happens) N5
Time
おもったら => just when; no sooner than ~ N2
Things do not match the prediction
~からとおもって => Because I think... N1
Base, base
(か)とおもうと / (か)とおもったら => just when; no sooner than ~ N2
Simultaneously
当然だ/当たり前だ => natural; as a matter of course N2