This sounds like a great scenario to me. I'm sure I would get along just fine with a duplicate of myself, and we could live together and get a lot more done. It sure would help a lot with avoiding burnout at work: we could take turns going to work, me one month and him the next month for instance. But two of us sharing one wife might be a bit much for her, so it'd be a lot better if we brought a second woman into the mix and lived as a polyamorous foursome (though this might be easier if we could create a teleportation clone of the wife too). It'd also be great having a double to help me on house projects, hobby projects, working on a side business, etc. And you mentioned kids: having an extra adult around the house to deal with them can only be a help, and since it's actually another me and not some other person, we're guaranteed to get along, have the same views on parenting, etc.
Honestly, I don't see any downside to this situation at all.
But I am 90% certain that if my spouse had a duplicate, they would be yelling at each other all the time.
It would be interesting to correlate answers to the question "If you had an exact duplicate, with the same body as you, the same thoughts as you, and the same memories as you up until yesterday, how would you get along?" with various aspects of psychology.
Why would your spouse be jealous of your clone? She'd now have two of you, so she's more likely to get attention when she wants it.
Then your copy claiming your job, your house, your wife and your children. Just as you would do.
Also if the transport process takes 20 lightyears, when do you send the ACQ? Will your original walk around for 20 years and then have an automated kill switch?