Compliling English to Spanish language learning book (no translation required, only basic proficiancy in English and Spanish)

This project involves taking two source documents, one in English, one in Spanish, and combining them into one document in a sentence by sentence, interlaced format. The finished product, after combining the two documents, will look like this: "Holmes," said I as I stood one morning in our bow-window looking down the street, "here is a madman coming along. [-Holmes -dije una ma?ana, mientras contemplaba la calle desde nuestro mirador-, por ah? viene un loco.] It seems rather sad that his relatives should allow him to come out alone." [?Qu? verg?enza que su familia le deje salir solo!] Each of the two source documents is about 85 pages. Thus, after being combined, the final document will be about 170 pages. The work involves cutting sentences from the Spanish document and pasting them into the English document, ensuring that the Spanish sentences are placed after their corresponding English sentence. All that is needed is the ability to read both English and Spanish well enough to match sentences with each other. I personally have combined similar documents before. This one should take about 10 - 20 hours of work, depending on how fast you can read, cut and paste. Please place your bids accordingly. One final note: I have tried to automate this process by making programs that combine the sentences automatically. It doesn't work. Some sentences in English are split into two sentences in the Spanish document or the reverse. Programs can't account for this, thus, the work must be done by hand. Please don't send low bids thinking that you can automate the process with a program. Thanks for your interest and good luck! P.S. Will pay a bonus for quick delivery