Apache/PHP/PostgreSQL update on a 4.11 p9 box

Hello, guys,

At work, I have a FreeBSD box, freshly updated from 4.10 p4 to 4.11 p9.
Also, I have to update Apache / PHP / PostgreSQL to the latest/stable versions.

The current versions I have (all compiled from sources):

Apache: 1.3.29
PHP: 4.3.5
PostgreSQL: 7.4.2

PHP was installed with:

'./configure' '--with-apache=../apache_1.3.29' '--sysconfdir=/etc' '--with-openssl' '--with-pgsql=/opt/pgsql' '--enable-ftp' '--with-pear' '--with-gd' '--with-zlib-dir=/usr/local/lib' '--with-jpeg-dir=/usr/local/lib' '--with-png-dir=/usr/local/lib' '--with-tiff-dir=/usr/local/lib' '--with-bz2'

Can you give me some tips about upgrading smoothly, without too much downtime, please? Any link or other resources you may have would be highly appreciated.

Regards,

Paingul