There is an argument when it comes to doing a mitzva, what is better, do it right away, zrizus or doing lt later in a nicer fashion, hiddur mitzva. It is interesting that the nesyim. leaders, where held responsible for waiting to contibute by seeing what is required because nothing might be required but maybe they could have added, if required, afterwards to their contribution. Also by a mitzva, if not you doing it then who except for contributions where others can precede you.
