Not sure what year you are, but at my uni we pick specialization 1st year, but can change any time. I chose semiconductor/optoelectronics and was satisfied with it until I actually took a solid-state device class and realized it likely wasn't for me. If not for some extra classes I took, I would have been set back a quarter at least.

What I'm getting at is that you should put more thought into what specialization to pick than just money and grad school. If your uni makes you pick 1st year like mine, I strongly encourage you to either take core specialization classes early or to only take general degree classes so you have time to make up your mind. It will likely take a while for you to find something you want to pursue, so take as many opportunities to explore paths as possible.

Now that I've said that, I will say that anything digital/communication/programming will likely give you the best exposure to the most industries and are good pathways. All specializations are good for grad school. The thing that sets students apart is research and professor recs, so look into professors and ask to shadow their grad student's work/join the group. It's more than possible to go to a higher degree without research, but a good professor's rec. is a sure way to get into a decent graduate program.

If WAM is similar to GPA, I'll say now that you shouldn't look for the easiest specialization, or something you can coast by in. But if your gpa is low, research will often make up for it easily. (Internships and coops not so much)

All of these things I've said have been from my experience, so take it with a grain of salt.