Oh, I forgot to answer the RFI question. We're lucky to live in a neighborhood with no overhead power lines, and my house has no cable TV or landline phone, etc. We run our Wi-Fi network via a cellphone dedicated for our VoIP phones, video streaming, internet, etc.
So I've been happy to find that, except for RFI from one particular exhaust fan, the noise level's not too bad here. Even the nearest legal marijuana grow facility (I hear those lights can give off interference) is at least a 1/2 mile away.
Like most DX'ers, I'm just seeing if I can improve on my reception without spending big $$. When I got back into this last summer, I literally just threw a long wire on my fence without any separate feeder line, grounding (I know, I know), etc., and that's brought in stations from 53 countries, as well as about two dozen different pirates within six months. So I can't complain too much. And, yes, I'm finally getting a real feeder line and grounding set up in the coming weeks.