COURSE selection help

So i have the following combinations for my next semester. The problem is i dont really know which combination to choose from. First i had on my mind was: Discrete, Obj oriented, operating systems, and linear algebra(i really dont know if it would be duable to keep my grades with 2 math courses tho). Second was Discrete math/Linear, architecture, operating, object oriented. Whats your opinion?Im very open to recommendations as i dont really know the difficulty of each course here. Thank you.

DISCRETE math

MWF:11:30-12:20

object oriented():

1st combo mwf : 1:05-2:20pm

2nd TR: 5:00- 6:15pm and 6:25-7:05pm

operating systems concepts:

TR: 11:20-12:35

MWF: 5:40 - 6:30pm

Computer ARCHITECTURE()

MWF: 10:30-11:20am

MWF: 3:40-4:30pm

Linear Algebra()

MWF: 3:40-4:30PM.