When I started my current (Generational) attempt at this, I started off by deleting all of the lots that were placed by the game that weren't part of the base game (ie any we were given in Generations, Late Night, Pets, Supernatural, Ambitions etc and so forth) I then replaced those ones in the game on existing empty lots where possible, using smaller EA versions of those same ones where necessary (eg the smaller equestrian center). In addition to Vargs and the Velvet Rose, I was able to get a couple of other bars from Late Night into the game. The only thing I wasn't able to get into the game on an existing lot (or by editing the size of an existing lot) was the Film Studio Backlot. All of the lots that are placed by the game were taken up, and I put down a 64x64 lot next to both the legacy lot and the Alto house, and put the EA Film Studio Backlot on that. I did not do anything else, and in fact I haven't tried to use it. Is that a suitable location for that one? If not, I'll happily remove it, as I don't think I've ever sent a sim to tour the studio or take on a film career.
Also, is the Film Studio Backlot used in Union Cove smaller than the EA created one, or the same size as this one?