に先駆けて => prior to; to be the first (pioneer); being ahead of ~ N1
に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation
~なくちゃいけない      => must do; need to; gotta do ~, say necessary to do something N5
Obligatory
うちに => While... N3
どちら => Where N5
Doubt
たちまち  => Immediately, Quickly, Suddenly, In a moment or flash N2
Status
ここ/そこ/あそこ/こちら/そちら/あちら => here / there / over there N5
Spatial relations
うちに => While; Before ~ N2
のうちに => Within... N3
Limit
ちょっと => a little N4
More or less in quantity
たち => Plural form N5
Amount
ちょっと => Hey (call someone) N3
Order