I want to skip the quota checking portion at install time, and will address it later

If you're install is hanging or taking too long on the portion that checks your system for quotas, you can skip that step and address is after the install is done.

To skip that step, type:

cd /usr/local/directadmin/scripts

Edit the install.sh script, and scroll down until you find a line that says

./fstab.sh

Comment out that line; make it look like this:

#./fstab.sh

then save/exit.  Type the following to restart the install from the point after you entered all of your information.  Run:

./install.sh

After the install completes, to look at the quota issue, run the ./fstab.sh script from the scripts directory.  This is the related debug guide for the quota issue:
http://help.directadmin.com/item.php?id=42