sony 1000 watt amp

Huh?  Got that backwards, don"t ya?  If an amp is stable at 2 ohms bridged, it's stable at 1 ohm per channel.  But, to the OP, this is a Sony we're talking about here.  Don't push it too hard, and it is fine (for the amplifier) to load it with different impedances on each channel.  Can't say that your results will be fine, though, listening-wise.  Assuming left and right channels, and twin (except for impedance) speaker systems for stereo, one side will get twice the power as the other.

I'm betting, though, that you are using this two channel amp for fronts and rears, putting two pair of speakers on each channel.  Tell me it ain't so.

Your odd-numbered sub system won't work out.  Even it up before you show it off.

Fact.  Odd number set ups are usualy not the best way to go (except for 1 sub, that is fine), you are either going to push your ohm load to low, and mess up your amp from overdriving it, or you are going to not have the ohm load low enough, and be wasting power, by not taking full advantage of what your amp has to offer... unless you have an amp with a regulated power supply, then what i am saying doesnt really matter matter.  NO, Sony's dont have that.  If your amp has one, you know it, because you paid a good amount of money for it. 

Haemphyst, that is just not nice.  You are not supposed to laugh at the guy who bring in sony, at first.  You are supposed to try to get him to upgrade, to "not junk," then, when he doesnt , it is ok to laugh, point and laugh, fall down laughing, make fun of his car and/or mama while laughing, tell him to QBAB, or even do all of the above.