Plan on instructing. It's the best way to both get your time up and learn a great deal about flying. You might surprise yourself and actually like it like I did.
For now focus on getting through commercial. What you learn now is your foundational knowledge to study as hard as you can. When you get to CFI you'll have to take what you've learned and apply it to teaching someone else. Teaching will help you to really reinforce what you've learned over time and make you a much better pilot. I think no matter what CFI you talk to, whether they liked it or not, will tell you that it made them a way better pilot and helped them in the long run. That's just how it works.
Think of CFI as a required step in your career progression. Some people avoid it and make it through just fine but from what I've seen that isn't very common. I will always recommend the CFI route. Best of luck with your training!