@Seg
OS/2 2.0 is rough until you remember it was competing with Windows 3.0 alone. As far as drivers for graphics and the CD-ROM the original system probably would have shipped with driver floppies for those same as they would have for the equivalent DOS or Windows versions. Having them rolled into the OS install wouldn't have been common at that point.
Really though, if you want to experience the OS/2 that most people actually remember fondly you need to go for OS/2 Warp 3, at least. That's where it really came into its own. I'd say give it a try, that PC you have there should run it well and it would have been the natural upgrade path for someone who owned that system in period.