[ctuna]

Not sure why your changing speakers with amps
Most people here would call the Jl xd a better and its
used here more often.
I would go with Morels over Focals because they are noted
to be less harsh (if they fit they don't fit in the coupe)
I would consider upgrading the under seats with something that
can handle the power better and sound less muddy though they will
sound better with more power(you might blow them to).

The weak points you have now are the under seat speakers
(underseats are both small cheap and underpowered)
and not really a lot of power if you upgrade the doors.