It is all doable, and the heavy majority of us have a good time with however we start in the hobby.
Yet, as many are suggesting, there are some ‘efficiencies’ that make our first experiences even better. I started in EZ-Track, and I enjoyed the first layout immensely. I didn’t like having to tweak the expensive turnouts! EZ-Track should be better performers for the cost. But the rest is a good product, and I had a lot of fun. That lasted about one full year, and then I had to tear down the layout so that the basement could be finished properly. As I was mudding and sanding drywall I was thinking about how to improve what I had accomplished with the first land-fill project.
On my second effort, started just weeks after the basement project was done, I tried spline roadbed and I used flextrack sections. Really and truly, it is one of the great teaching processes in the hobby, how to lay good track. The railroads rely on big and well-taught departments to lay track.
I also purchased individual engines, good quality ones, that were NOT parts of train packages sold by the manufacturers. I knew enough about the hobby by then that those engines were too often, if not always, of lesser quality. I have only one Atlas diesel, a Fairbanks-Morse Trainmaster with QSI sound, and it is a marvel…a wonderful model. All the rest are BLI, Trix, Proto 200, or Rivarossi, all purchased separately, all acquired when prices were low, and all with DCC and sound decoders.
DC is simple on small layouts with one operater manipulating one engine at a time. Yet, as you say you will eventually convert to DCC, you will set aside an engine and a power pack that you paid for, unless you find a way to use them for other purposes, or unless you pay for, or convert yourself, the engine to DCC. The funny thing is, starting out in DCC is no more complicated, a