Radiator question

[D95]

I have a 95 LT1 (stock).I am thinking about purchasing a DeWitt or a Be-Kool radiator.I am using a 180 stat.I know the cool down time will be shorter than the stock rad.My question is will the cruising temp.be 5-10 degrees lower with the new radiator using the 180 stat and stock fan setting.(Current rad.is fairly recent).I know in traffic the temp will be the same as the stock rad.I do not want to use a 160 stat and reprogram my fan settings.
Thanks