to s/u or not to?

yes yes, i should stop blogging. but i'm just reminded of my S/U thingy, which i'm really so troubled with n need some advice. shld i S/U intro to cybercrime?? the deadline's monday!!

basically i have 2 options:
1) don't S/U
pros
-need to obtain a lower cap (4.5) to achieve second upper. tall order but still lower than the other option nonetheless.
-workload more spread out
cons
-i'm not gonna score anywhere near an A- for this mod
-i've been lost in every single lecture, know nuts bout wat's going on
-if i get a B (which is highly likely, at best), it'll already screw up my plan
-the 50% test is coming wed, but i haven't started

2) S/U
pros
-i can leave out one module, and pool all my resources into concentrating on the other 4 modules
-more likely for my remaining 4 psych modules to score A, though also difficult
cons
-i will need a 4.6 to achieve second upper
-each remaining module takes up a higher percentage of the cap, hence i must do well in every single one
-need average of A, A-

i've half a mind to S/U already, since it totally seems like i really dun grasp the module at all and think i can at best get a B/B+. computing stuff is just beyond me. but this is like a life n death situation as it can affect my final cap greatly, so i dun wanna make the decision rashly.. any kind folk has any opinion/advice??

also, i used the cap calculator on the nus website to calculate wat's the cap i need this sem. but it kinda differs from my own calculation, though i'm pretty sure i din do it wrongly. intuition tells me i shld trust the cap calculator, but i really wanna be sure. it can't go wrong right?? anyone knows plspls tell me too.

i'm so confused now.