Congratulations on your travels
Life is for adventures.
I have spent alot time on sailboats and enjoy traveling by water, as well as working on commercial vessels allows more travel while working.
I am new to the site but have owned toyotas over the years. They are very popular around the world for dependability and reliability. Where i have a home in Central America toyotas out sale all other makes of vehicles together. So you shouldnt worry youve made a great choice choosing toyota as the others have said having it checked out by a reliable mechanic and tuned up and replace belts and hoses replace all fluids have radiator pressure tested and have throughly check for leaks from any where on engine and transmission. Brakes check front and rear. Good tires that are properly rated for the weightload of camper. If you plan on driving a ways and keeping it a while a new set should help eliminate alot of worries and problems.
I purchased a older 1986 4 runner with fuel injected 22r 4x4 years before mechanic went through it as described above purchased new bf goodrich all terrain tires. New Bilstien shocks and drove 3600 miles from Sandiego CA to south Texas into Mexico out of Mexico into Guatemala to the Caribbean side near Belize and Honduras. No issues. Maybe lucky but toyota dependability is worth putting out the cash, and care for it with regular maintenance and service.
I own a 1996 toyota 4 runner 3.4 liter V6 unlimited SR5 4x4 rear axle locker 1 owner well cared for bought 6 years ago with 330,000 miles a 1 owner vehicle it has now 357,000 miles burns no oil. And at 3000 mile oil changes oil comes out as clean as it goes in. Most mechanics dont believe me, but when they see the oil when its changed they believe. I have been told that the 3.4liter V6 toyota engines are 500,000 mile engines and i am going to see if its possible. This one will very likely drive to Guatemala next year from the MD area.
I have been considering a RV but toyota Sunraders have caught my eye i am here to see on this site to learn about them and their known issues and problems.
Most vehicles with new tires, springs and bilstein schocks will drive again like when they were new. More investment but more comfort in the ride in return.
Southeast Asia is beautiful i have spent 9 months working there on ships inbthe last 18 months. Phillipines is my favorite so far. They love foreigners there.
Happy trails and travels.