I would first consult your local fire inspector and get what is and is not required ie, locations, how many, and what brands they recommend. They may even know a decent electrician to install them
Also, the current locations of your smoke alarms may be improperly placed and doesn't make sense to spend the money to just do it wrong.
I would keep the alarms on their own AFCI breaker/circuit too, even though the NEC does not require this. Just smarter that way because less chance of interference from other AFCI and GFCI if shared with existing lights and outlets.
The extent of the project could be very high since you did mentioned you're in a condo. Some condos have no attic and basically have a concrete slab for a ceiling. Others may have a drop ceiling grid, so it is hard to give a fair estimate without knowing for sure.
And yes, a licensed electrician would be required since the type of smoke detection we are talking about uses high voltage. If it were low voltage then most of the time the alarm company handles their own installation.