Hi,
My current full time job is that of an IT Project Manager for one of the largest companies in the world.
I am managing 7 projects at the moment and on 5 of them I also have to upgrade the wireless solution.
The current wifi setup that we deploy has 3 wireless networks (2 internal (private) and 1 for guests).
I will be able to manage you local resources for designing and implementing the access points (i am assuming you already have wired data (correct?))
It will probably take me a few days to work with an engineer to design and (preferably) heat-maps for placements.
Depending on your budget and choice of suppliers, procurement will take from 1-2 days to a month.
Physical implementation should take less than a day (depending on who is installing them, cabling length, etc.)
Configuration and testing should also take a few hours.
Please note that times may vary depending of factors outside of my control (such a local labor and purchasing), but for my work it should be a 4-5 days work, depending on your company size.
Due to the time difference, I can work up until 3-4 PM your time (will need you to tell me your location), or very early in the morning.
Please comeback with any question you might have.
Have a wonderful day,
Romeo