Triple boot Vista, XP and Ubuntu Linux!

Hi there.

I just got a new HD and what to do with all that space? Trying out new os'es
of course! I've got a P4 3,2 GHz pc running Win XP Prof. SP2. Now I would
like to play with some new stuff to figure out what os will be replacing my
XP when it "retires".

This is my plan:

1) Creating 2 partitions on the new HD and formatting with NTFS
2) Installing Vista B2 from my existing XP on one of the new partitions and
getting the dual boot to work.
3) In a week: installing Ubuntu Linux 6,06 letting it's boot loader multi
boot all 3 os'es.

Please let me know if you think i'm totally crazy or you think it will work.
NB: The installation is done on my main pc so of course i'll do a lot of back
ups before the show. But if the process is too risky i won't go ahead with it.

Hope to hear some interesting views on my plan!