There would only be maybe $120K in retirement accounts after 10 years - not even $5K/year SWR.
Doubtful that the $500/month pension can be drawn at 50, but if it can, that only gets this person up to $11K income.
Expenses are $2500/month or $30K/year, so with no adjustment in spending, this person either needs about a $750K stash (more than gross earnings over the 10-year horizon) or a way to make more than $29K in part time work. I also don't see a line item for health care, which would be an added expense in ER if it's covered by employer currently.
There are some easy expense cuts there - housing (roommate, cheaper COL area after FIRE), cell phone, food bill, travel, utilities. Those would all need to get scraped to the bone to get the savings rate, way, way up.