[exim] acl whitelists

In the configure file where the acl's start like so
begin acl

Is it ok directly under that to have a white list section like so

accept authenticated = *
!sender_domains = /usr/local/etc/exim/exim.whitelist
!senders = /usr/local/etc/exim/exim.whitelist2

The plan being to have a nice global whitelist section which will skip
all other checks rather than having to edit each acl further down.
Am i on the right track.
Cheers Terry.