BW9 installation strategy when combined with prior versions

Soon I will have time to install the full BW9 I purchased. I also have full version BW8 and 5. Since each is standalone, and I'm still trying to get used to the different interface in BW8/9, I want to install all three of them on one computer. However, what I learned from BW8 installation is that I should install BW5 AFTER 8, so they can co-exist side-by side. (Else, the 8's installation wipes out 5's fonts, even when installed to a different directory).

For a different reason, though, I want to first install BW8, apply all its unlock codes, and THEN install Bw9 over 8, even though each is a standalone version (no upgrades). The strategy here is, to avail myself of the many BW8 modules I purchased, and then put the BW9 interface on top of them.

Ergo this query: is this the best way? Or can I just install BW9 solo, then apply all the BW8 unlock codes? Or did the codes change? If the BW8 codes don't 'port' over to BW9, that's okay; then I'll have three versions on one computer, rather than merely two.

Sorry to trouble you with these questions.

If it matters, I'd be installing to XP Pro 32-bit, on a 64-bit hardware architecture, 4 GB RAMM, Intel Xeon quad-core. But I'll want to later repeat the same process, on my VISTA and Win7 Pro machines. I'm the only user (I live alone, no chance of any other user).

THANK YOU FOR YOUR TIME!