に先立って => before; prior to ~ N2
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
...たいんですが => want N4
How to say the beginning
の[末「すえ」]/た[末「すえ」] => conclusion N2
Reason, Result, Response
いたします => to do (polite form of します) N4
たいです => want to do something N5
いただきます => to receive N4
Benefit
~仮に...とすれば / としたら / とする => ~If..., suppose... N1
Condition (hypothetical condition)
~たり~たりする => Do things like V1,V2 N5
Verb suffixes
~たらんとする      => want to become, worthy of ~ N1
たらいいですか => what should I do? N4
たらどうですか => why don't you; how about ~ N4
Invite and advise