I don't know how recent the screenshots were taken in relation to the current version, but the texture you're using on those pillars is an industrial concrete and looks quite out of place in my eyes.
! it says 137 megs on the latest download. Unless you've got custom content out the wazoo that is huge for a koth map. Yours is the second largest map I have installed beaten only by pl_shoreleave_rc1 at 153 megs but it has a ton of custom content and is PL. You may have some textures or sound asset at too high a resolution. Typically 1024 is the highest you'll ever need and you can often sneak by at 512. Only a couple models I've ever made required higher.
I'd check to make sure you haven't double packed assets or packed assets you didn't use too.
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