Bicycle
I use a dual suspension mountain bike, because its nice to my back and makes riding long distance much more gentle.
I distribute my baggage weight about 20% front, 80% back, and this gives me stability at speed without making tight manouvres difficult. It aso allows me the option of adding food and water to the front without making the bike too front-heavy.
Its packed above the suspension, which helps me ride smoothly and easily over rougher roads and trails - and through floods. It also means I dont have to secure it so stiffly or strongly to the frame - the suspension also protects my bags from the road shocks. I'm quite amazed where I can go without my bags falling off. I can unload my bike and shove it under a bus in 2 or 3 minutes. Many times I have had to get on a bus very quickly.
I attach a couple of bags to my handlebars (which are also unusually set up), and have the rest of my gear in a backback which I lay horizontally across the strengthened back rack.
I dont use a bike trailer, because I often put my bike on buses and sometimes on planes. I dont carry any weight on my back!
Total weight of bike and baggage is about 35kg.
About my alterations:
Its taken me some time to develop this arrangement, and has involved some alteration to the bike setup. You may wish to copy this approach, or go with something more commercial/conventional.
You can see the yellow pieces of aluminium picture frame extending from the top of the seat pole to the rack tube - this increases the capacity of the rack from 10kg to more than my weight (70kg) - I have bent the seat pole a little carrying friends on the rack.
The handlebars have 2 pairs of bar ends attached in a strange configuration that allows me a higher hand position, so I can ride in a more upright position without getting sore wrists or hands.
The indigenous Australian flag doesn't mean I'm indigenous, its just my preferred flag over the one created by the colonisers. All the other stickers are reflective tape.