Abs is not JUST about bf%.. If you want a defined six pack, you must work them too.
Jack knife crunches, crunches, lying leg raises, side twists, basically anything you can do...
If you are interested in losing fat, try a keto.. you'll be very happy with the results.
1g per lb of bodyweight... for you 172grams
Under 20g carbs daily
The rest is fat... (make sure to get good fats like Olive oil, which also improves your skin)
Then on Saturdays, carb up... 60% carbs, 30% pro, 10% fat.
Sunday back to keto.
You're a beginner, so you probably use to eat like shit and you're not use to activity.... You can gain muscle and lose bodyfat if you do it correctly.
If you do decide to bulk, 10lbs is nothing in 5months. If you cut down low, then just eat around maintence you can probably put on 10lbs in 5 months.