Your capital lines are roughly in the right range except furniture, which is low. $900 furnishes a room once. Room rentals at this price point turn over often and residents are hard on furniture, so plan on a replacement reserve of $150 to $250 per room per year on top of the initial buy, and buy for durability rather than appearance.
The ongoing lines you're missing, in rough order of size. Insurance is first and it's the one people get wrong: a licensed rooming house with unrelated occupants and shared facilities is not a standard dwelling risk, and quotes commonly run two to four times a comparable single family landlord policy. Get a real quote with the occupancy described accurately, because a policy issued on a mis-stated occupancy is a claim denial waiting to happen. Second is utilities, since rents at this level are almost always all-inclusive, so you're carrying heat, water, electric, trash, and internet for six adults. In a converted house that's frequently $600 to $1,100 a month depending on climate and envelope. Third is labor. Weekly common area cleaning at six rooms is real work, $300 to $600 a month for a cleaner, and someone has to answer the 11pm call about the kitchen.
Software is the small line. Property management platforms that handle by-the-room leases and per-room ledgers run roughly $30 to $150 a month at this size, and screening runs $30 to $60 per applicant, usually passed through. What actually matters is that the platform can hold six separate leases against one address without you faking it with unit numbers, so ask that in the demo.
License renewal is usually annual with an inspection, and the inspection is the real cost because it generates a punch list. Budget $2k to $5k a year for whatever the inspector finds. Also confirm whether your conditional use approval carries an expiration or a review date, since some jurisdictions make you come back to the commission, and a second hearing with counsel is a five figure event.
