Concerned about weight gain while building muscle

Recently switched my gym routine and eating habits to build muscle and get bigger. Going hard in the gym 4 days a week plus another two days of light to moderate cardio. I've upped my protein and food intake as well. Getting roughly 160g of protein daily. I'm a 5' 10" male around 188 lbs so I'm already on the bigger side.

So before I get too far down the rabbit hole with this new gym and eating routine, I'm worried about gaining fat. I've already got some extra pounds and while I'm feeling good right now I'm worried my eventual muscle gains will come with pounds of fat. I'm aware their will be weight gain, but how do I keep it under control?