Full-time
Pros
The pros of hiring full-time are pretty much the opposite of the cons of freelancers.
This person will likely be more focused on the development of your company, as they have a sense of stability coming from it.
This increases their performance and, therefore, the growth of your company.
Although it may be pricier, the investment pays off - a happy worker equals a motivated and highly productive one, which is great for your company.
This member will grow with your company, starting to grasp more in-depth knowledge about your processes and issues, and will soon begin to be co-creators of your company's vision, strategy, and success.