I actually dont know that I have ever looked up the nutritional values of the beetles as most reptiles wont eat them. They emit a noxious odour often when disturbed so many reptiles wont bother. Although dragons can be garbage disposals at times so I have heard of people's lizards taking them down.
As for the nightcrawlers, yes I just feed them whole. You can cut them up for smaller dragons if you want, or if you want them to wiggle more. I usually rinse mine to get the dirt off and they wiggle around as a result of that anyway. The bait shop ones are usually ok, just ask (or smell) if they have been kept on manure, which is something you dont want. Open the container and take a smell before you buy them, it shouldnt smell like manure in anyway. This will also give you the opportunity to check that the worms arent dried out or dead, which can happen if they are kept wrong or old. They dont need to be gut loaded as the majority of their nutritional benefit comes from the dirt they are in.
As for the nightcrawlers, yes I just feed them whole. You can cut them up for smaller dragons if you want, or if you want them to wiggle more. I usually rinse mine to get the dirt off and they wiggle around as a result of that anyway. The bait shop ones are usually ok, just ask (or smell) if they have been kept on manure, which is something you dont want. Open the container and take a smell before you buy them, it shouldnt smell like manure in anyway. This will also give you the opportunity to check that the worms arent dried out or dead, which can happen if they are kept wrong or old. They dont need to be gut loaded as the majority of their nutritional benefit comes from the dirt they are in.
my dragons will eat just about anything. saphira once tried to snatch my phone out of my hand.. with her teeth ! i got my phoenix worms, and everyone here loves them, including cupcake my leo 
