Something I've been pondering too, however for the most part there is a lot of experience across the roster, so it shouldn't be too difficult compared to major rebuilds you see from clubs in the past where there is alot of inexperience.
The all important backline wont be a dramatic change person wise, forwards, well as long as they start simple and just actually go forward as a first priority (given the size purchased I'd imagine its a very 'up the middle and simple' approach as a basic game plan - but there is also creativity in the buys), i think by mid season we might see a bit more creativity on display there injuries pending. So really it is a case of whoever slots in at #6 and his combo with DCE as the main piece that needs to gel from the get go. The rest with any luck will look after itself.