Gap year after sophomore???

I am currently a sophomore and I will be a junior next semester. I applied for couple interns with decent salary. I am thinking to take a gap year if I get accepted for that intern opportunity. I am just not sure yet, since it is a important decision. I am just wondering has anyone done that before and how is outcome of that. Also, I am planning to transfer to another university when I get back. Is that also possible to make me more competitive?

Everyone?