I would personally steer well clear of spun content for any PBN you really value - if you haven't got the time to write the articles yourself, why don't you pay someone $4 an article? It won't be amazing content, but it is a step above spinning if you ask me.
Remember - a PBN can provide good results if done in the right way - understand the value in your PBN and stop looking to cut corners.
Just my 2 cents.