I haven't really fixed the era yet.
Despite seeing UP loco's I've been purchasing MRL equipment lately and this will be an MRL/BN freelance layout. UP motive power will also make an appearance on run throughs and possibly interchange. So, I guess that puts me in the late 80's early 90's for a time period. This layout is something I've peiced together over the years to get to what I have now and I'm liking it more and more now that scenery and other elements are finally taking shape. But, that said, I'm using the whole thing as a test bed to develope my techniques for layout building. So, the plan is for this layout to go away once it's mostly done and I have designed a replacement.