Can someone please help me Urgent!!!!! 10 points easily?I have 1 hour left to decide :((?

First of all Today is the last day to drop add or drop a course...

My problem is I have 19 credits and some people tell me its a lot and u should drop one course. I am confuse and don't know what to do. Well my major is math and I want to go to an engineering school.... oh and my GPA till now is 3.83. So would I be able to have some fun, work for some hours (2-4), exercise and still get A's or is it impossible? The past 3 semesters I took 15-16 and I got all A's expect 2 in all my courses I tooked. All the 19 credits are math and physics, the one I am thinking to drop it is linear algebra... I guess I could get a B without studying it that much. Should I take it or my GPA for engineering would become unattractive. Another reason I like to drop it is cause I love to devote lots of my time tunderstandnd all the problems( even the ones that are not important) and with 19 credits I think I have to manage my time more.....

Not sure what to do... :((((((((((((((((((((((((((((((((((

Oh and English is my second language and still I am learning it if u need to know. Feel free tell me anything u think