Enable real Administrator & set password so I can install drivers/software?

Hello everyone,

I've always used Windows as a "limited user". When I needed to update
drivers, install software, or configure security, I would log in as the
local Administrator, perform that work, and log back in as my limited user
account.

I planned to do the same at home with Vista- but after installing Vista
Ultimate, I saw that it disabled the real Administrator account. I created
another account for myself as a standard user. The machine now has three
accounts- the disabled "real" Administrator, my Administrator-group account,
and my standard-user account.

Should I enable the real Administrator account, set a password for it, and
install my drivers and software? Then I could delete that
Administrator-group "second" account, and just have two accounts on the
machine- real Admin and standard user.

Or should I leave the real Administrator account disabled and do my setup
with the second Administrator-group account?

I read something about the real Administrator account becoming enabled if
Windows had to boot into safe mode; should the real admin be left disabled
without a password?

Thanks!