I'm new to train modeling and want to set up a large layout. I'm running 200 feet of track around a room on a shelf with only 90 degree turns. I'm using O gauge tubular steel track that I purchased from Menard's. I bought a ready to run LionChief 0-8-0 Pennsylvania Flyer with 4 rolling stock and will add 3 or 4 more. I'm not running any accessories and only have the power pack and Bluetooth controller that came with the set. I've read about running a bus wire but those seem to run off a transformer. I do intend on soldering connecting wires between track sections and screwing the track sections to a solid wood roadbed. I have the section of FasTrack where the power pack plugs in that came with the set and can add transition track so that it'll work with my rails. Should I add more of these sections with additional power supplies or can I use the universal lock on I found on Amazon to run a bus wire the length of the track and use jumpers to add power every 20'? Thanks for any advise.