Toronto to Malaysia for Honeymoon, how many days are enough for the country?

Want to go Malaysia for my honeymoon this coming May, but not sure how many days to look for. I know YYZ – SIN – KUL is my cheapest option for getting there. I'd spend about 3 days just travelling (with layovers etc.), so with that in mind, how long should my trip be? Since i'm stopping in SIN, I figured its worth checking out the country for about two nights?

I was thinking around 7 days ish in Malaysia. Would you guys say that is enough? Thanks for all the help!