Dear Employer,
Thanks for your invitation.
This job does not look like something I've done before, but it looks interesting, and I'm located in Medellín, so a little sun isn't gonna kill me in the end.
However, in spite of your project description being neat and tidy, I may have a lot of questions, considering you are requesting 40 Hours/week (i.e., full time).
Specially, the way this job results will be evaluated, and of course, the duration, being total hours or days, of the project.
Feel free to drop me a line to discuss further into these details.
Sincerely,
-DEN!