<p>I think you should do classes that:</p>
<p>1) interest you and consequently can do well in
2) are likely to transfer to top schools
3) are small enough to allow you to cultivate solid relationships with professors who can then write well on your behalf
4) are rigorous, but not to such an extent that you cannot do well in them</p>
<p>This is just my intuition, so don’t take it as gospel. Good luck!</p>