David,
   On my ES, I have the switches as you mentioned with the exception of the
toggle for the rudder (which I now wish I'd done).  I'll add my 2 cents
worth to what a couple of others have said.
   I didn't think of putting my rudder trim on a switch, but used the extra
button (at Infinity's suggestion) as a starter button.  After engaging the
starter several times inadvertantly or when I meant to transmit, I
disconnected this and now use only the key for starting.
   As an old military guy, I use the coolie hat for pitch and roll and have
a separate rocker for rudder.  We use a separate switch for rudder trim in
airliners as well.  If I weren't used to it that way, I'd make th coolie hat
switch for pitch and yaw.  Jim Cameron's right- you use rudder trim a lot
and aileron very seldom.  If I had to do it over again, I'd simply swap out
the button I'd used for my starter and put a left/right toggle for the
rudder trim.  I may still do this when my fix-it list dwindles and I have
some time on my hands.
   By the way, I've never had an instance of inadvertantly bumping the
trigger to transmit.  That one is a no brainer and works great for me.
   Skip Slater
   N540ES