Broad and Anderson's speeds are fine. I thought Jimmy bowled well enough to take more than he did. Notice how well both Broad and Anderson contained our batsmen when we resumed our 2nd innings on the 3rd morning. Then came Tremlett...despite the fact he took Twatto's wicket. Neither will Swann be as effective here. Much better if you have a proven wicket taker like Finn who can arc it up to the 140s. A wicket taking threat that maintains the pressure built up by Broad and Anderson as opposed to Tremlett who slowly leaks it.
I'd also go with 5 bowlers. If Trott is shot then maybe he's the one who should go rather than hide him at 5. Bring in Stokes. My Eng XI Cook, Carberry, Bell, KP, Root, Stokes, Prior, Swann, Broad, Anderson, Finn. Everyone can contribute with the bat - even Finn. If Adelaide is flat it could justify playing 5 bowlers plus there may not be the bounce that could expose the bowling all rounders.