Welcome aboard.
The Cabrio comes with power steering, so with the after-market cruise control, you wife will be cruising in style.
P.S. - My partner here just picked up an orphaned Brabus from the San Antonio dealer. If you are considering upgrading the wheels, suspension, body, exhaust, etc., you might want to look into that package. It's a good bargain compared to the price for buying all that stuff after market. The Brabus has the same performance as the standard models, so you can still get your tinkering Jones satisfied by souping up the power.