My experience is that the timing belt lasts long on these engines. I guess it's a combination of age and wear. In your situation I would gladly postpone it a year or two, unless planning for a longer trip (~ 10 k miles).
One factor is the water pump: It normally doesn't quite last 2 x 90 k miles without starting to leak, so if it wasn't changed at the last TB change, it would be due soon. Otoh, if it was changed, and you change the TB now, I wouldn't bother with the WP.
I changed the TB and WP after 8,5 years and 132 k km. The TB had no visible wear - hard to distinguish between new and old belt. The WP was weeping (at 282 k km). That is now 5 years and 35 k km ago - not planning to change anything on the engine for the next 2 years, at least.
Btw, on these engines, it might as well be the tensioner or roller bearing that fails, not the belt itself.