well welcome to the site
to answer some of your questions,
one, that is a good county, YES< but there are many good county's in Ohio
but then again big bucks are killed all over ohio, in every county so???
what sized bucks will be where you hunt depend on so many things, from QDM to locals, to pressure to how much crop lannds to how many people live there , how much lands are open to hunting and NOT to hunting and so on and on!!
just naming a county isn't a way to say you will see big or small or any bucks or deer at all!
quality depends on a ton of things
and yes again BIG bucks will get killed every yr in Ohio, yes in that county too!
but it sure doesn't mean there behind every tree or you will even see one where you hunt,
no matter what county it is!
next the rut typically starts about mid nov in Ohio, can be early or later but the middle of nov is about average, this yr things seem to be starting early all over so??
gun seson( shotgun, or muzzleloader or pistol, no centerfire rifles allowed in Ohio's gun season, so read up the laws if you plan to go then)
it starts the fist monday I believe right after turkey day, same day it starts here in PA( I'm from PA)
the best advice I can give you is,
if your friend lives in Ohio, and hunts there , your best bet would be to be asking him what to expect, as he would have the best knowledge of the hunting area you will be hunting, and thus the best answers
good luck