Fixing the deck is a must and you shouldn't rent the house without that being addressed. Way too much liability if you don't.
Your insurance will need to be changed as you are turning the house (at least partly) into a rental.
Pets are a personal decision, you can increase the rent by $50ish/ month and keep that but they also create lots of noise, almost always have accidents in the house destroying flooring, tri and doors, and create extra messes that have to be remediated when tenants move out.
You can split utilities 50/50 or include utilities in rent and just charge a rental rate. If splitting, you may have to provide proof to tenants of what the utility costs are to justify and get them to pay the extra $$ above rent.
Limiting access to the backyard is a non issue. Just include it in the lease, and know that limiting access to the backyard makes having pets harder for the tenants
Having a property management company will limit access to you, the landlord, from your tenants. But it will also cost a portion of the rent that you receive. If you go the pm route thoroughly read through the contract and make sure you understand it and that they are in line with what you expect from your managing team.