Investment in a new home includes furnishing it, not just making a dp.
CW in his latest confession suggested that SW and NUA's plane was not really delayed. That comes straight from the podcasts which attack SW, that she chose to miss a plane, got drunk, provoked him into murderous anger. His fake anecdote was just a watering down of that, and since he claims not to have internet access, only the people who call or visit him could have spread that to him.
CW could have gotten a part time job, as a well-paid mechanic for a few hours a day. Instead he spent time and money on a mistress. He didn't really have any monetary stress, he handed his paycheck straight over to bills, and spent the attaboy money cards on strange stuff instead of things for his family to help out his wife.
SW had started dealing with a realtor, but contrary to what he implies, the new downsized house was to be for the family, not just for her and her kids.
Why mention the furniture she sold to a home buyer? So what? How does that contribute to being a stressor to CW?
To work their way out of debt, why do you think she had to think about getting another job? She was already making more than her husband, working from home, what kind of job do you think she should have applied for which would earn more? How do you know they didn't "agree" on the status of their employment?