The number one rule in packing for a trip, is to pack as lightly as possible. You might have to carry your luggage a considerable distance, such as from the trunk of your car through the airport, and to the luggage carousel. Many people don't use many of the clothes they pack. Many hotels have laundry facilities, so you wouldn't have to worry much about having enough clean clothes. You also need to decide what you want to pack your clothes in.
Garment bags can be great for short business trips.
Most airplanes have little compartments with a bar that you can hang them on. However, garment bags are not very easy to carry if they are full for a great distance. Wheeled luggage is great if what you have packed is heavy. Some wheeled luggage have built-in handles that fold up to allow for easy transporting. These are much more manageable than suitcases that have straps on them.