Greetings,
My name is Jeremy Trammell and I represent a group of developers and designers based in Portland, Oregon. We would be happy to assist you with taking your Arduino project to the next level. Inclusive of final testing, communication delays and such I believe we can have this project completed for you in one week, but we should be able to have an initial delivery for you to test in no more than 2 days.
Before we begin work we will need exact specifications regarding your four tasks, but for now I believe you have made it very clear what the general scope of the required work will be (a rarity here!), but if you have any questions about us, our qualifications, or our approach please don't hesitate to let me know.