Indeed you will - congrats!
I've been impressed with McDonald with the ball, but his batting has been woeful.
And when Clark is fit he comes straight back in.
As for playing 4 quicks, it's not negative if they are your 4 best bowlers - when Clark comes back I'm starting to think that our bowling attack should be:
Johnson
Clark
Hilfy
Siddle/Lee (depending on whether Lee can regain form)
Having North, Clarke and Katich to bowl the slow stuff, plus Lee, Johnson, Clark and Hilffy/Siddle would be the best option atm.
Comparing that to the SA attak of Styne, Ntini, Morkle, Kallis and Harris the australian attack would be just as good relay. Inform Lee, Clark and Johnson would be 3 of the best quicks in the world with Styne and Ntini.
Clarke, Katich and North have all shown they can be dangerous with the ball in hand. Both North and Katich can rip the ball, Clarke bowls similar to Harris, not as much spin (more than Haurie thou) but uses changes of pace.
For the last seamer option, Siddle would be leading. Hits the deck hard, and extracts alot of variable bounce. Hilffy does have the ability to swing the ball more than Siddle, and does so at 140km, while bollinger could also be considered as he to swings the ball just as much.
Before the Warnie era, Australia were always very pace oriantated, and I think we may see that again.