The SPTA scenery is mine, designed for Horizon VFR Gen X 2+ scenery and UK2000 VFR airfields. It will not work for default scenery.
I might be releasing some of it at a later date in conjuction with a project that is being set up. It only covers approx 5% of what should be around during the major exercises as it gets a bit of a bummer with my FPS and Treescapes at the same time.
I shall make some more at a later date to cover more FOBs and training aids. The scenery has a few goodies in it, such as firing/gunshot sounds, scenarios such as IED ambushes which need MERT extraction complete with red/green smoke depending on where you go (hostile or cold).
I have a hard time making scenery, all i have is Whisplacer and whatever scenery libraries are compatible as my Simconnect is corrupt and cannot be reinstalled correctly unless i reinstall Windows itself. So i have no Simconnect and FSUIPC is a no go either

When it was all working, i used Object Placer in the SDK.
So i have to rely mainly on default FSX and Acceleration objects together with UKVFR. Some of the objects i have used were not available and so i had to make new GUIDs and other stuff. The oshkosh tankers are default objects repainted but only show in the day, at night the original textures appear which is odd.
I am not just doing SPTA, i am doing other areas too such as Bovington. It helps having knowledge of the areas (and exercises), luckily i know "every" place on SPTA covering the 25x10 mile area so navigation is easy too and fully genned up on the exercises after following them for the past 6 years.
LightningGoose
That is fine, if you like "real" (serious) flying rather than mucking about. We conduct now, pretty much operations that are in line with real training/operational deployment training.
We then, after the serious stuff sometimes have a muck about afterwards. We tend to fly between 11pm and 2am on Friday Night and Saturday Night although i can do during the week around the same time too.