If as I recollect the straps or ears that you describe, connect between the mast and the mast collar, and are fairly strong and ridgid -then you wouldn't need any mast wedges, as the straps serve to secure the mast in the center of the thru deck opening. Does that in fact seem correct?
I wouldn't worry about wedging the foot of the mast unless you want to move the foot fore or aft for more or less rake. With the straps and the shroud tension, the foot is likely to move. To reposition it, you'd need to unload the shrouds, disconnect the straps and probably take a line around the mast to a winch and crank on it.