First of all, I think you are fabulous. You have been raised in a religion that you are begining to realise is... well.... not condusive to a happy life is the mildest thing I can say without getting into details, but you know what I mean. But you're a decent man. Good job!
Second, there are two alternatives to leaving. Honestly with all the osracism that will generate, and dishonestly. Please don't think I am loading those terms morally; I chose the dishonest route and would do the same again; as they don't play fair why should YOU play fair??
If new working hours mean your current meeting times are impossible, you chnage congregations. If you bump into ex-members of your Cong at times that clash with your cover story, you're going to the doctor/dentist/vet, whatever.
Of course, you don't start going to the meetings at the new Congregation. Your cards will be sent to them, as they share a hall there will probably ne a discussion about you. The new Elders will pay a call when you don't show. Tell them about the overtime you work, the terrible insomnia your partner is suffering, the constant colds and coughs the kids get, complain moan and bitch. Don't touch anything doctrinal or fall for them asking trigger questions.
If you can keep this up, the visits could tail off quite quickly. If you don't give them anything doctrinal to get interested in, they'll get bored with you, especially if you make their visits as unpleasent, tedious and annoying as possible. You'll be classed as an inactive Witness. Your contacts with family still in will still be allowable by their doctrine.
You can then learn, think, plan decide what you want to do without being under the constant pressure they keep you under to stop you learning, thinking, planning and deciding things for yourself.
If you decide honesty is the best course, hold on for a few days and see what the BIG NEWS is, and if it is as BIG as it is made out to be, maybe you get to really stick cats amongst pigeons and take other people with you. Maybe it'd be worth hanging on until your next talk to give you the platform (hoho) from which to give other JW's the heads-up?
But all the best to you and your family.