Most people recognize that a timing belt has a mileage limit, but do not know it has a TIME limit of 5 years.
We recently replaced a timing belt on a 2003 Beetle with 45,000 miles. I would not start the car until the belt was changed. The cracks in the timing belt were to the point that the cogs were ready to fall off.
The other one that comes to mind is someone who was waiting until the odometer hit 100k. At 98,000 miles, the timing belt blew. He lived in Louisiana, and the 5 year limit is even more important in a hot climate. It was the first timing belt job he was going to do on a car that was 9 years old...4 years past life expectancy.
Now, when it comes to timing belts, I would not suggest short-changing your timing belt kit. There is a set of non-reusable engine mount bolts you need, along with two small rollers and a large roller and bolt (another TTY bolt). We always replace the serpentine belt. The timing belt tools and a look at the "how to" for changing a timing belt would do you a lot of good.
At timing belt interval is a great time to check the front crank seal and see if it is leaking, which is not unlikely. You are also close to the 250k maintenance interval for your oil pump chain and tensioner, which is behind the crank sprocket/ front flange/ sprocket bolt, which by the way, is also a TTY bolt. If you are doing a front seal, it would be very logical to also include the oil pump chain.
As a footnote, we have a very cool, easy to use removal and install kit for front main seal. Also have timing belt tools to loan or buy. Check with us about that.
I'm not much on replacing good engine mounts. We can repair one easily enough, even in place. If there is a fear of that happening, we loan out a 12mm x 1.5 Recoil Kit, which includes a very long recoil insert. Once recoiled, the motor mount becomes very durable.
Another tweak that deviates 'from the book'... we haven't used the preload +1/4 turn method on the engine bolts, but go to direct torque values. We find the difference makes the engine mount last longer, but still does not cause an issue with bolts breaking and leaving the engine hanging, as might happen from either under-torquing or reusing old mount bolts.
Any other questions or needs, feel free to contact us.