Though it’s been a long while, I have a couple of things to suggest that might make your life easier in OWB:
1) IIRC, the main questline - or one of the specific side quests - of the DLC culminates in you getting some badass robotic augmentation perks that can boost your attributes. Can’t remember the name of the quest, though, sorry!
2) Listen to the new radio station. It’s got new music, which I really appreciated! I know it won’t make you stronger per se, but it may help:)