You're on the right track here and your logic is solid. However, the only reason I'd maybe say "wait and see" is because although Canadian exporters should be able to benefit from a weaker loonie, potential tariffs could more than offset that.
We will need to see what Trump truly does when he gets into office in late January.
One company I can think that would benefit from a weaker loonie would be Magna International. However, this is a prime example of what I am talking about above. The weak loonie helps. but if Trump places a 25% tariff on Canadian imports into the US, It is possible auto companies south of the border would look domestically for purchases.
Another key point here is if the loonie gets SO weak that even with potential tariffs it is more profitable for companies to purchase from Canada. But that is a whole other can of worms.
Overall, I'd be waiting and seeing what Trump initiates in terms of Tariffs before I'd make any moves like this.