[CentOS] Seamonkey (with plugins) as Firefox replacement?

Hi,

I'm running CentOS 5.1 with the GNOME desktop in all our public 
libraries around here. I start from a minimal install stripped down to 
the bones, install X11, GNOME, and then one application per task. I try 
to follow some best-of-the-breed logic, and my focus lies on robustness 
to avoid the Tamagotchi syndrome :o)

Recently I've been rather disappointed with Mozilla Firefox, which 
crashes more and more often (this has already been developed elsewhere 
on this list).

On one of my machines, I'm running Slackware Linux 12.0, with an XFCE 
desktop and the latest Mozilla Seamonkey browser. This browser gives me 
entire satisfaction: light on RAM, fast, and (almost) never crashes. So 
the idea is simple: install Seamonkey instead of Firefox.

Now I'd like to integrate things cleanly, not install it additionally to 
Firefox. My main concern now are plugins, namely Flash (flash-plugin) 
and MPlayer (mplayerplug-in, never knew why that hyphen wandered off 
:o)). I'd like to do things cleanly, so I have a vague idea. Tell me if 
this sounds reasonable:

1) Install Seamonkey from latest SRPM.
2) Install flash-plugin from SRPM, but modify the .spec file so it 
depends on Seamonkey instead of Firefox.
3) Do the same thing with the MPlayer plugin.
4) (I never succeeded to install the Java plugin, I guess I'll leave 
that for after I'm dead :o/ )

Eventually, create my own repo with the resulting RPMS, and define 
priorities for Yum so that my own packages are used first.

Sounds feasible? Or does someone have a better suggestion?

Cheers,

Niki