Welcome Anselm24.
124k in AAPL alone stopped me in my tracks and I highly recommend to sell it!
Or at least slim it down considerably.
It's way too much stock into a single company, and not just a single company, but a tech company, and not just a tech company, but Apple of all tech companies....
Apple is a great company to be sure, but their core business relies on innovation and ultra-secrecy in their product lines. (Apple even got ThinkSecret to shut down, it's that bad.) That's both an advantage and a disadvantage depending on where you stand, but unless you the kind of guy who reads near real-time feeds for MacWorlds and have a good pulse on consumer technology fads... I don't recommend this stock at all.
That said, I must qualify that I am also not above buying Apple. Their potential "next wave" is going 3rd party apps for iPhone... and I envision higher resolution iPhones and iTouches as well. The technology exists for it, but it hasn't been implemented yet.... Oh, and I also believe that they will be unlocked!
But even though it's got room to grow, I don't think it's going to be gang-buster like the introduction of the iPod or iPhone. So, that's my "prediction".
But the reality is still that you're way over-weight into a single company, and unless you know something even ThinkSecret don't know (if so, please DO share it with us!) then I'd go ahead and diversify that holding.