I fly out at Mather also and race with Dave.

I just started racing last year and it's going to be tough to beat the WM Mustang for a first racer.

We had a friend of ours come out with us this last race with a WM Mustang built stock with a OS 55AX and he won a race in Bronze if I remember right.

If you think Bronze is where you want to race (I have no idea of your piloting skills) I would recommend that setup.

I think it's extremely forgiving at low airspeed (landing) which is important because if you knock the gear out on landing your probably done for the day.

If you can find a good used YS91 that might also be a good choice.  The YS 110 is too fast for bronze IMO, it's almost too fast for silver running just 20/20 fuel.