Not to be discouraging but most of the best Classical Archaeology programs expect language skills near if not entirely equal to philology/Ancient History students. It might be useful to take a year within a Classics post-bac program (UPenn, UCLA, Georgetown, UNC-Chapel Hill to name a few) in order to get an intensive in both languages. However these programs are costly and aren't funded so that can be a major turn off. Additionally, getting some intensive language training would definitely open up the pool of schools that you could consider and the positions that you could find yourself in. You can really only get so far (not very) in any classics derived field by ignoring the languages regardless of whether they're your primary interest.