I'd suggest bulking at a smaller amount (200-300 cal over TDEE) while keeping levels of protein high and keeping the same intensity in your workouts. Also get some tape measure to measure your biceps flexed/unflexed and chest and do it 2-3 weeks.
That's the problem. I really really like that I lost that fat and want to keep goint, at least until I reach 80kg (I'm at 85kg right now). I don't want to start eating like a pig and gain all that weight back.
What would you suggest? Losing the other 5kg in the next 2 months and then start working out on a surplus?
EDIT: my TDEE is about 2400kcal.