Google is getting VERY good at catching spun content so you'd better be talented at manual spins. If they DO catch you, of course they'll spank you... and hard. So anything you use spun content on is inherently AT RISK. Worse yet... Google gets better at finding spun/poor content every year. So in the longrun you're screwed. I'd weight your other options and see if you couldn't find a cheaper source for manually hand written content.
This excellent article rewriter tool will thoroughly scan your entire content, looking for the words that it can replace with a synonym. All the words that it replaces with a substitute will be highlighted in the bold and colorful text. By clicking on any of the highlighted words or phrases, you can see the original word, suggestions or add your own word. Also, you can click on the original word to revert or click on any other word to replace.

2. Show Off Your Singularity - In my previous posts, I have discussed the value of being distinct from others in your business. You must promote your singularity. What's it about YOU that will bring your audience for you? Among the greatest mistakes you can make is attempting to duplicate someone in your business. Although, they may become successful, you're not giving your target audience reasons to pick your services over theirs. That is why it is essential to reveal your audience why you're distinct, and be consistent with your singularity.