It's years old but I keep it clean and more.

HOWEVER you want 3 monitors and that's going to cost as few laptops do that today. You instantly moved to higher end laptops.

My old Lenovo y510p has the usual 4th gen i7, 16GB RAM and next week will get it's 1TB HDD replaced with a 500GB SSD. I think this will get me another year or 2 before I change the laptop out.

Maybe you need a desktop where 3 displays aren't as challenging or as costly.