I have design this interior design based on your requirements ( conditions in 2d plan ) and also related to the inspirational photos you have show to us :)
I think that this is a design that allow all the employers work inspired in a beautiful and contemporary-industrial style area. On both 2d plans ( ground and first floor plans ) I have create spaces for all the functions you need, to fulfill all your needs about the work; In the first floor I saw as necessary to let the file room as a live function. Open spaces allow the employers work and comunicate with each other and also there are many storage and bookshelf around them. For completing the furnishing I am based on the fabric "Maison du Monde"- very stylish furnishing and good prices on it. You can find online here on this site : http://www.maisonsdumonde.com/
For any further information about project, you can let me know .
Have a nice day,