Fresh installs of OS 3.1 and 3.9 on A1200

[Vanfanel]

When I got my A1200, it was "preconfigured," and I really don't know what was installed beyond the obvious. Now that I got my subway card in there, giving me an easy way to transfer files, I was thinking of wiping the CF card and installing from scratch 2 partitions: one for 3.9, and one for 3.1. My question to you all is this: I don't know beyond the very basics what I should be installing to get the best use out of each OS. What additional software should I get, what patches, fixes, and whatnot. Some assistance to point me in the right direction would be most appreciated. Thanks.

[Vanfanel]

I'm familiar with the Boing Bags, and I planned on at least using the 2 official ones. Not so sure about the 2 unofficial ones. That pretty much takes care of the 3.9 side, but not the 3.1 side. I know about the classic workbench, but how am I going to learn more if I just use something prepackaged, to be honest.

I also wonder about software that I should have. I know about some things that are necessary (MUI) or useful (ToolsDaemon) but again, more knowledge is most appreciated. For example, I've never used DOpus; it it really that big of a deal?

[Vanfanel]

I'll make sure to have the OS backed up, as to avoid such problems.
A lot of data for me to go through. I have more research to do, it seems.
Thanks for your help.
I'll still take more suggestions, if anyone has any.