I see that you are in Canada.

Code says no more than 12 light outlets or 12 plug outlets or combination thereof per cc't. Each light counts as one outlet. I've seen many more than 12 devices/cc't. Is it OK? That's your decision. Is it safe? As long as you don't overload the cc't then it should be. Are you pulling a permit for this? If not, then I think you've answered your own question.

Each fixture counts as an outlet. Switches do not count. However since you have only lighting you are allowed more than 12. IF only lighting is on the circuit you are allowed to load the circuit to 80% of its max wattage rating. You must use the max wattage bulb allowed to be installed in the fixture to do this calc.

Thanks for all of your responses. Ya we are in Canada. Thanks Joed for the 80% rule. I will add up the max wattage for all of the light fixtures and see if I am ok to add the new ones in.

If they are fluorescent fixtures, you use the amp draw of the ballast, not the wattage of the bulb.