A bulk is a bulk (you are eating enough to gain mass/muscle), it doesn't mean gain lots of fat, or gain extremely slowly. This is why people hate the word "bulk" lol
The difference is with someone like yourself, versus someone like me (fast metabolism), is that you would curb your carbohydrate intake more than me (e.g. 30% or under of total calories) and be more concerned with timing (e.g. carbs around training, not many late at night unless after training etc).
Secondly, you would only eat enough to gain. Both of us may gain 0.5-1lbs of weight a week, but you would have done it via much lower calories than I did. Example, to gain 1lbs a week, I need to eat 5-6000cals/day, on the other hand, my brother can gain on as little as 3000cals/day.
You don't have much lee-way with your calorie intake (things can spill over more...which means sticking more to "sensible" foods), but it doesn't mean that you have to gain extremely slowly or anything.
You still have to gain weight. At the end of the day, you'll find it easier to lose fat after a bulk (due to having more muscle and a faster metabolism from bulking). You can always switch gears when it's time (fat isn't permanent)...like take 8 months to gain 15lbs or so, then the following ~3 months to lose 15lbs (which would make your body composition even better than before due to the increased muscle weight)
Hope this helps