MNT100

hello everyone,
my first time in and i'm asking about a 2000 avalon, sorry. i hope to find answers to questions about my 96 t100 later. right now i hope to get some help on my wifes' avalon. i get error codes P0300, 0305, P0171, and P1305, = random misfires, cyl 5 misfire, mixture too lean, and i can't find the 1305 (i think it's just repeating the cyl 5 misfire). also engine runs rough and dummy light flashes on acceleration and solid while steady. i replaced spark plugs cuz it was time (no help tho). i suspect the igniter but the Haynes manual says Toyota doesn't publish resistance values this year Avalon(?). So the question is can anyone help me verify the igniters and/or shed light on the 1305 code? Thanks, a little help or some direction is greatly appreciated.
MNT100
P.S.big thanks and a little plug to Auto Zone store for reading error codes for FREE! vs. guessing or paying $100 to the dealer! (hope i can say that)