Well, it's ALWAYS a good idea to spend more time with family. But relax dude - you're still gonna be around in "6-8 weeks". Here's just a few reasons why:
1) "The objects are coming at us from south of the ecliptic". Sorry, we don't have any visible light, or radio telescopes which can point "south of the ecliptic" - therefore it's impossible to know if anything is coming from there.
2) "Two objects we know a lot about, the third is an anomaly". Sorry, if you know a lot about the first 2, you'll know the same amount about #3 as well.
3) Objects coming from the Oort Cloud or the Kuiper belt approach on the ecliptic (or very close to it), not from the south of it.
4) Enough debris to block out the sun? PUH-LEASE! Does this guy have any idea what he's saying? If there's that much debris, the Earth is gonna be smashed until the surface is completely molten again.
5) Our ability to detect inbound rocks is limited indeed. If objects come at us from our vicinty - i.e. an NEO, then we will most likely have between 5 and 5000 years advance warning. Anything coming at us from Jovian space is harder to detect, and we'd be very lucky to detect it more than 3-4 weeks before it crossed the orbit of the Earth. See number 1.
Comets tend to spew a lot of gasses and are therefore highly visible, and are easier to detect than asteroids or other non-volatile impactors.
6) Orbital mechanics is (relatively!) straightforward math. If you can observe something then you can, within a VERY short period of time establish FOR SURE if it is going to miss earth or not. Observing for a period of weeks, something which will impact within "6-8 weeks" will yield incredibly accurate results. i.e. it'll hit us - or not, and we could be confident in that math.
If the stuff is indeed a "cloud", then we simply won't survive. Nothing will. Earth would be obliterated, because interstallar debris will be travelling at velocites in excess of 250,000 kmh. (Normal solar system debris will vary between 40,000 and around 70,000 kmh).
There are no "clouds" of stellar debris left. Jupiter and Saturn took care of those 3.5 billion years ago.
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There are numerous other stupid assertions made by this guy. If he believes what he says, then he's a crackpot. If he doesn't - then he's just your plain ordinary, garden-variety scumbag.
Believe me - you can't stop astronomers looking into space by starting a few wars. Nor can you shoot down asteroids travelling at Mach 100+ with missiles designed to shoot down other missiles going about mach 4.
Also, the astronomical community is very tight knit. It is IMPOSSIBLE for an object to be discovered and for that object not to be known by just about every astronomer on earth with 48 hours.
The VERY FIRST thing astronomers do when they think they have found an object is to use the INTERNET (Yeah, that thing based on ARPANET, set up for astronomers!) to distribute their findings so that any and every astronomer with a telescope can point it that direction to find out more about it.
Now. Go and have that restful sleep you deserve.
Oh, and any page which links to "The Enterprise Mission", except to say how freaking stupid that guy is, isn't worth the electrons thet're used to store it!
:) Oh, and definately spend more time with your siblings. 
