If you are going to do 30,000 miles a year in it then it sounds like an easy choice
If you were only doing 10,000 a year then the 20,000 miles you'll do over the period of the inclusive servicing would probably only equate to an oil service or brake fluid service. But with your mileage you're going to have a couple of inspections too.
The Plus option inlcudes brake pads, brake discs, wiper blades & clutch assembly.
A 5 year one is only about £800 BTW (basic) and £1600 (plus) - but only upto 60,000 miles, so no good for you.
Is the car new, or does it have some miles on it, and how far until the next service/inspection?