You can relax and stop worrying. There is always something you are missing. Always some upgrade that will make everything better. Always. So relax.
Also in my experience audio buddies are absolutely no good whatsoever. At least not in terms of helping you build a better system. At least not in the sense of better meaning what you call better. Whatever that is. Because only you know what that is. So no one else can ever help you with it.
Still, it can be good if you can find a few. Listening to their systems you can always feel just absolutely wonderful about not having wasted your precious time and money on the crap they have. Or, you might look at it the other way, find yourself thoroughly enjoying something completely different, and realize there’s a lot more than one way to skin this cat. Which there is.
About the worst that might happen is you find someone with like ten or twenty times your budget and a to die for dedicated room, professionally designed and acoustically treated, and he (its always a he) by some stroke of luck actually did something right and it sounds so good you can hardly believe it.
And this is the worst that might happen, and it will still be good. Because then when you get over the initial shock and stop drooling you’ll realize it really is only a little better in certain areas, in this way or that, and for all that money you could have had a whole new house, and Porsche (or whatever car you consider the very best, although if it isn’t a 911 then maybe a little less time on stereo, little more on cars until you get it) and shoot probably trophy wife and/or girlfriend (or both) as well, and again that is the worst that can happen.
Personally I find it a whole lot easier to just visit Definitive Audio every once in a while. Few minutes being barraged by $1.3M worth of dreck and I saunter out with a whole new spring in my step.
Although, come to think of it, trophy girlfriend would sure be nice....