Do you have DR? If not, get it and read it. It's your game plan. Determine the things you did wrong in your M and do 180's on those things. Your W said she needs time and space, give it to her!! Quit pressuring her.
That sure is a bunch of kids for one parent to take care of. I think you need to figure out how that's going to work if ya'll ever do get back together. Obviously you need a job, but you're putting a huge burden on her leaving her alone with all those kids so much each week.