Good luck, but you won't get 50-50 commercial/domestic split.
I've been going for 5 years by myself and I doubt my commercial is 10%, and I'm always trying to get it.
I only know 1 w/cer with 50/50 split, and he's been going over 20 years.
...and Ian Giles will tell you, he was lucky to get a good round started then.
You won't get much commercial now, there's too much competition.
Don't let it put you off, there's plenty to be made in domestics.
Rog.