I like Wouldstra and Hess, of the moderns. Of course, Calvin is essential (I am thankful that he actually commented on this book). Howard is useful. I would definitely get the O. Palmer Robertson lectures from WTS bookstore. If you read Latin, then try to get hold of Poole's Synopsis Criticorum (you can download it from EEBO at your seminary, most likely).
Besides the aforementioned, and Matthew Henry or Poole's Annotations (the Synopsis translation of Joshua is still a little ways off), also consider William G. Blaikie.
"No Falling Words", by Dale Ralph Davis. Required reading at RTS for Richard Pratt's course, Genesis to Joshua. Very good. Just technical enough, but easy to digest.