I think wood shop showing high grade if you want to have a higher grade feeling.
Square carpet is a good choice for office carpet! But to tell the truth, it's convenient to use floor.
Composite floor, high-end, and there is a high grade solid wood flooring style and wear proof
Do not use the carpet, because the grade is only one aspect, you have to deal with the issue of fire and so on
Use composite floor, which is wear-resistant and easy to clean, and beautiful.