just as a note, and not meant to take away from your post... (BTW: I like your elevated RR for it's ease of maintenance)
I had waffled over battery or live steam for a train to run in the winter months with snow on the rails.
I never moved forward. I just don't run outside in the winter months.
I am very content with track power. I can run several big consists as long as I desire. Flipping polarity isn't a big deal for me. Done at the start when engines get oriented in their consists. (PS3 engines don't need it.)
I do like the freedom of battery. I think I'd go battery now if I was just getting started. Heck my new car is electric.
I think the bigger issue is all the crap that falls on the rails over the months.
If I had the money, I would have moved to a country side property with more area. I would dictate what trees are around my rails. Not the blackberry tree of my neighbor on the property line on now have!
Off to go cut the overhanging branches again....