The SonoKong gold plastics, like all of their pre-engine gear system plastics aren't fully compatible with the takara/hasbro parts (I wrote a blogpost about the specifics of what does/doesn't go together a while back), but at least from a competitive standpoint Driger's AR and Dranzer's Blade Base are good when used together so while you'd still need the gold dragoon s's spin gear and a Wide Survivor/Wide Defense (in a pinch, 10 Wide isn't awful and is much cheaper/easier to find) to really use them. Most sonokong stuff isn't great for collection value either (their molding tends to be a bit iffy and collector's generally shun them).
The Gold LDD is very nice, though, definitely the highlight there. I would just keep it mint rather than using it, though.
But hey, if you just bought them because you like them, you can't really lose can you