Components Ohms?

That amp must be discontinued, there is no reference to it at the Rockford site.  I don't know it's power output.  You have 3.5's at 35 watts, and 6.9's at 110 watts.  Both have what look to be good crossovers (but how in the world do they make them so small?).  The power needs to go to the larger ones, of course, but they're probably in the rear deck, right?  You need to maintain stereo separation, so connecting left to right is out.  That would mean connecting front and rears, but the Rms is vastly different.  So...

Considering everything, I would run those speakers at no lower than 4 ohms.  Which means don't parallel any of those speakers together.  That means either get another 2 channel amp, or trade for a 4 channel.  And the most volume, most power, should go to the front of the vehicle for proper staging (presence of the music).

But an alternative is to run the 3.5's off the head unit power, but install them in the rear.  And move the bigger ones up front and run them normally off your amp.