PLAN for Instaling multi-boot WindowsXP, Linux, BeOS and Haiku?

I am planing to install Multi-boot option with WindowsXP, Linux, BeOS (again) and Haiku (first time) on my laptops. For this reason I am curious to hear of informed and knowledgable multi-booters oh what would be best way to do it to optimize invested time, hard disk space and increase levels of compatibility with different systems.

Historically it has been a practice to start Multi-boot setup with oldest and most rigid OS version WindowsXP and move to Linux, then I am guessing BeOS and finally Haiku would be the last.

Assuming that Windows and Ubuntu/Linux are installed on spearate partitions... how is one to proceed?

? WHICH version of BeOS should I install: BeOS 5.2 (last official), Dano (last leak), Max (recent hybrid distro), yT Zeta?

? HOW to install Haiku? By copying files into BeOS formated partition?

Any Tips and Tricks as well as personal recommendations based on experience are more then welcome ;-)