You might need to DIY, but "mad scientist" is doing a lot of work in your statement that I don't think applies. You just need to follow some very-thoroughly-detailed online tutorials. It's one of those things like baking, where as long as you're good at faithfully following directions, everything turns out great.

> I keep hoping there will be a bunch of small businesses electrifying everything

There are a few of these per large city; but they serve companies with large budgets for "becoming carbon negative", not residences trying to do things cost-effectively to lower their electric bills.