Blog writer needed

I am looking for someone to write 150 to 300 word blogs for me. All blogs will be related to residental construction with a emphasis on green building. Subject like solar hot water and electricity, Insulation, windows, good building practices, and any other related subject is what I am after. I can supply titles and or subjects if you like. Just let me know. I will be checking to make sure blogs are not plagiarized. I will pay once I have checked them out. I would like for you to bid this project in blocks of 50 blogs. I dont need them all at once and we can do a pay as you go type arangment. I am open to whatever works best. I have a wordpress blog set up through bluehost. Let me know if you need more info.