It is impossible to keep a house clean and tidy working full time with little kids. Just rest assured it will get easier when they are big enough to throw all the little kid stuff out.
As for work clothes WYSIWIG, since having a child I just have black pants and black skirts and a nice top for each day of the week and one or two black jackets. I have found that target quality is just as good as more expensive brands. personally I think it is difficult to tell the difference in black pants as long as they fit well. I can only do Chaddie for a few hours at a time. It wears me out!