using "firstboot" for further SW installation

[Robert P. J. Day]

  from a previous posting, i recall the proposal of using the initial install
to do a "minimal"install, then using "firstboot" to further configure/install.
would this have any implications for estimating space usage that you can
do now?

  at the moment, when i install, i can get an estimate of how large to make
the /usr filesystem by selecting "Everything", even if i only plan on installing
a subset of the packages.  doing that at least tells me how much space i might
need later if i decide to add everything i left out.

  how would leaving additional installation until firstboot affect this?  or would
it?

rday