METRICS
I have five years of experience in scraping websites from google, I can help you find those blogs.
I have questions tho:
Does it really need to have 50 OBL's?Or blogs with lower OBL's are welcome to you like those PR 2 blogs?
Do it need to be blog as a whole? Or It can be blogs with products selling on the side?
Is the budget for this job is only 30$, or is it still negotiable?
I can scrape those website and filter them so spam blogs won't be included in the list. I have a way to filter those(manually), i will discuss this to you once you'd hire me.
You can check my portfolio for my past works. This is my forte and I can surely help you with this.
Than you, I hope you can message me so we can discuss this.
Thanks!
"Quality can never be disowned by Quantity"