"with good timing" is correct and usable in written English.
You can use it to describe a situation in which something was done in appropriate timing, such as when someone started a project at the right moment. For example, "He finished the project with good timing before the deadline."
Functional clockwork is not to be confused with good timing.
She tends to perform her best with parliament in session; its resumption comes with good timing for her.
(Needless to say, only those members of the latter group with good timing and health care will get to enjoy this benefit).
With good timing, a fortnight before the world premiere of his opera Anna Nicole at Covent Garden, Mark-Anthony Turnage also featured.
Enemy encounters see the player hold the iPad vertically, tapping sword or shield icons with good timing to strike and repel.
With good timing, furrowed brow and a nice line in sincerity, he invited comparisons to Tony Blair a compliment even among Conservatives these days.
We report progress in developing a focusing DIRC with very good timing resolution.
To their surprise, they succeeded -- with luck, good timing and the help of the Industrial Areas Foundation, which had a long relationship with Mayor Rudolph W. Giuliani.
At precisely that moment, and with implausibly good timing, two window cleaners slowly dropped into view on the outside of the building.
Unfortunately for her, he recovers with remarkable good timing and in remarkable good health, and turns the tables, throttling her then poisoning her, in a mess of complex heart-monitor-swapping.
With eerily good timing in light of the Edward Snowden leaks, Wired this month published "The Secret War," a piece by James Bamford on the National Security Agency's Director, Keith Alexander, and the rapid expansion of America's cyber-war infrastructure.
