If you want to increase your output or the rate that you push out these articles then you need to consider using plr articles. There are good and bad plr suppliers so test a few out before making any sort of long term commitment or subscription. I have a number of plr sources that I have found over the years. Once you have your plr content to hand then you need to look at how to use and rewrite plr articles content to get the best result for your purchase.
You must in the first place acknowledge that these plr articles are cheap and not ready to go. they need some work. The reason that I point this out is that you can afford to be a bit choosy with them. I recently bought 120 articles in the credit card niche for $10. I will be very happy if I use even half of these as the basis for my own rewrites. The way I look at it I have not wasted any money. I always find that some of the supplied articles will not suit me. I also know that some will not be good enough for me. Do not think of this as an issue. You will never like every supplied article you receive.
The second point is to make sure you have your own set of keywords ready. I do not usually use the keywords supplied because they do not focus on my target audience. I will already have done a few hours looking into the keywords I am going to use before starting a writing spree.
Finally you need to know that you must rewrite these articles. Do not submit them without changing them by a minimum of 25%. In fact my minimum is 50%. You must ensure that your articles is unique.
To know how to use and rewrite plr articles content you can get a free tutorial on article writing by going to the mega article website. This website is for new article writers who are learning the whole process of how to write an article that gets read and gets the click through.