hmm I didn't need to take SDE101 but actually, I think it should be fairly easy.. your command of English seems fine to me too so you shouldn't have a problem.
http://tlc.suss.edu.sg/english-proficiency.html not sure if you'll find this page helpful but just fyi.
you know how it works right, term 1 and term 2? if you only take one module you won't have anything to do for the other 6 weeks. again, just something for you to consider. but yeah I can understand if you want to go slow cause a newborn isn't easy to care for haha. congrats btw! =)
oh and the subsidy is automatic, you just need to pay the amount listed in your invoice