You can download RC3 of Snowplow from TF2 Maps, but it doesn't have any HDR and thus becomes fullbright in the SFM
You can disable the lighting and re-enable it to have the lighting become relatively normal, but you still don't have control over things like the tonemap scale
Also, your posters have really improved, but i suggest using the HWM models from tf_movies unless they don't have a bodygroup that you need to use