With the exception of the laundry, and maybe the thing about the lights, the budget looks do-able. If you're going to charge the roommate full freight, deliver full service to maintain low turnover.
Personally, I haven't done the $10 cell phone thing. For simplicity, I'll assume at least some minor fudges, resulting in an outcome of roughly $1000/mo. Adding in another $2000/year for things like auto depreciation and occasional health care costs (I assume you're healthy and employer pays premiums), I interpret the likely outcome as $14,000/year. Hell, let's add $1000/year to pay for visits to family and, if crafty, a bit of additional travel; so $15k expected spending.
That gets your savings rate close to 70% even without the side job, implying that you will be only 6 years or so from FIRE...before accounting for any wage increases. I wouldn't take any side jobs unless I wanted them. Just get the roommate, make sure your career is advancing, and learn to have fun cheaply.
You seem in part to be Always On the Go. If this is because that's the most fun way to live, fine. If it's driven by anxiety, skip the side job, make the core changes, and give yourself time to calm down. The real goal isn't financial, it's living a good life. You have the tools to ensure that your finances will support a good life. Just do the basic right things and, where possible, let the worries fade. Once the 70% savings rate is actually happening for six months or more, get counseling on any remaining worries. Your mental health is important.
