Addon scenery performance

OK, so I've got a question and I know this isn't for everyone so I don't really expect a whole lot of responses. Just trying to get a feel for what you guys are doing & surely there are a few out there with similar software setups.I'm running FSX Deluxe with SP2 and the following addons;PMDG 747-400XUTXFSGenesisGEXREX V2 with OverdriveA few airports from FSDTFirst off, I have to say that airports aside, I was expecting more than what I'm seeing in the sim. It's probably something I did, but a lot of screenshots I see of supposedly same/similar scenery setups just blow mine away. I'm working away from home so can't access my desktop for specific info, but everything is set to max except for air/land/water traffic which I keep to a minimum. For those of you who have run with these addons or still do, I'm looking for opinions/recommendations. Should I have gone a different route on the scenery? What do you recommend for a hierarchy in the scenery library? PM's are welcome if you don't want to post here or have additional questions.My System;Win 7x64 home (because it was free)Athlon II x3 OC'd to 3.36GHz (unlocked to basically an Athlon II x4, but the ASUS board calls it a phenom even though it doesn't have any L3 cache)8GB DDR2 (already had 4GB of DDR2, so I cheaped out instead of getting a mainboard that supports DDR3)GTX 465 card running 2 monitors (typically 2D cockpit on one, FSC & an external view of the plane on the 2nd)SSD boot drive with FSX and all addons installed on the SSD (it's a leftover Apple drive from when I upgraded my laptop)