Modify or create similiar Wordpress plugin

I currently use a csv import Wordpress plugin to create thousands of doorway pages on my blogs. With it I import my keyword list (in text/csv format) and it creates one post for every keyword using a template I create in the plugin's settings page. What I would like is for you to adapt the existing plugin or write me a similar one from scratch, but instead of using the basic text template as the content of the post, I would like it to take random sentences from within a folder of articles and 'mash' them together to create the content of the post. So for example, it takes 5 sentences randomly and puts them together to make the first paragraph, then another 4 sentences to make the second paragraph and so on. Here are some more features I would like. If some of them don't make sense to you, because you think they might make the content unreadable, all I am trying to do is make the content unique from page to page. I don't care if it's unreadable; • The articles will be in spin-ready (spintax) format. The plugin will need to spin the sentence as it creates the post. • Ability to insert the keyword randomly into the post with option in settings to control minimum and maximum times per post. (eg. 'how many times would you like the keyword inserted into the post?' 1-4) • Randomly choose number of paragraphs in total per post - (with option in settings to control minimum and maximum number of paragraphs per post.) • Randomly add bullet points somewhere in the post (between paragraphs ideally). Use a random sentence as each bullet point. Option in plugin settings page to determine how often it adds them to total number of posts (0-100%) and maximum number of bullets per post. • Would like text boxes in settings page to be able to control what's entered in the post title, page title, meta, tag fields. So for eg. the page title - "This page is about 'keyword' and other things." • Random insertion of subheading(s) between paragraphs. Use a random sentence as the subheading and initial capitalize it. Would like option in settings to control how frequently it adds subheadings (0-100%), option to choose formatting of the subheading (bold, H2, H3 etc), as well as choosing how often it should insert keyword into the subheading (0-100%). • Option in settings to randomly insert image (from media folder) into the content whilst post is being created. Position should randomize between center, left and right. Option to control how often it inserts (0-100%) • 3 boxes in settings page where I can add content to beginning, middle and end of post. Must be able to use spintax in them also. • Option to randomly bold, italicize strings of words. So it will pick eg. 4 words together in a sentence and bold or italicize them. Would like to choose how often it does it and maximum number of words. • Option to randomly bold, italicize the keyword used in the post. Would like to choose how often it does this and the maximum number of times per page. (eg. 'how often would you like it to bold/italicize the keyword in a post?' 0-100%) • Needs to be as fast as possible, without crashing the server. Depending on the server, the current plugin can generate about 100,000 posts in less than 24 hours - I'd like similar performance. The following features already exist in the original plugin, but would like them included in this one; • Keyword list will either be text or csv file. • Need to be able to select which category the posts will be made in. • Select starting date of posts (easier explained when you see plugin). I realize some of these features might not make sense yet, but I just wanted to give an overview now so you can decide if you can complete the project before bidding. I'm happy to send you the existing plugin if you would like to look it over. Code is for my exclusive use and must not be distributed in any way. Thanks