For an almost 9-year old website with Google PR3.
Just bid if you can do it.
Oh ! by the way it is for a Japan based clean business company of repute.
NO SPAM OR AUTOMATED BIDDINGS.
Properly communicate through PMB.
"Payment - as soon as solid result is seen".
N.B : A review at GAF that you have been successful in the past will be a proof of your excellence.