Ok a couple questions. Can you get dcc and sound in n scale ready to run set? N scale is more space saving, and I do have a n scale that needs an engine....though ho seems to be more predominant

I am just getting started and would like some help. I do not have a local hobby shop to visit and the nearest club is over an hour away. I have several dc sets and quite few cars. I would like to construct a lay out. I am debating on svc and sound but know nothing about them. Any help would be appreciated