Is 90% of this guide just for people to know how you obtained the command rather than explaining the command?
Well, yes. The main point is to get the id of the seed, which I haven't yet found an online source. As far as I have seen the owner tag is always ic2, probably due to the fact that I am playing "vanilla" IC2. The rest of the stats can be edited according to your own will.
The command includes all the NBT data needed for a valid seedbag, because if you don't include all the NBT tags needed, the ones that you don't include will be set to default, giving an invalid seedbag. It is a whole another story about the NBT stuff. If you want to get into it, there are info on the Minecraft Wiki. There is just too much to fit in a single post while trying to explain everything.