I am finishing up the basement and have determined that I will need to
add two circuits to the panel to provide for these outlets. My
question is:

Should I install both circuits next too each other (one circuit
breaker above the other in the panel) or skip one place. If I skip one
place, this will allow for both hot leads to be in phase with each
other and eliminate the possibility of ever getting between the two
circuits for a 240 shock as well as a lot less wasted electricity
through the capacitance of the wires being out of phase in the same
conduit ?

Thanks