Jake,

an over contribution to your TFSA will cost you 1% per month.

If you anticipate an investment in SLI now, will increase by more than 1% between now and your earliest investment date in January, the 3rd. I believe, you should think about this route.

A cost of 1% versus a gain of ????

As Sculpin likes to say "It's about the Math"

Disclosure : I've already done it. (Not all in SLI)