Be as prepared as you can. Buy items, food, baby stuff etc so that you won't be stressed out about these stuff when baby is out. Even if you're working full time, you also should share the caring burden for your wife to rest.
As for PPD/PPA, you can get a trusted friend to check in on you, and between you and your wife, educate both yourselves on the signs/symptoms and have daily check-ins, take a step back if stressed, etc.