Use the following trick if you are having trouble carrying all your items with over-encumbrance. Clear an area of enemies, then click the Right Analog-stick to grab a 55 gallon drum. Fill the drum by physically picking up items and dropping them inside. You now have a container with all those items that you can fast travel with. Note: When you arrive at your destination the drum will fall to the ground and you have to pick it all back up again.