Modern engines don't really need running in. I'd just drive it as you would normally and just avoid slogging it at low revs.
This. It's better to use more rather than fewer revs in any circumstance - and this is always true, regardless of whether the engine is being run in or not. Far too many engines spend far too much of their time in too high a gear at 1500 - 2500rpm.
Exercise your new engine throughout its rev range, trying not to spend too much time at any one speed/rev combination for the first few hundred miles. You don't have to worry about over-revving it, the ECU will stop that for you.
