It has already been said, but I'll repeat and expand.
If you are pursuing a professional career, most likely your first job will be in the right seat. Either as an instructor or as a co-pilot.
As soon as you complete your Private Pilot training, begin to fly from the right seat.
Start learning all the commercial and instrument maneuvers from the right seat. As soon as you can get comfortable flying them, start teaching them.
Don't just "burn holes" in the sky building time towards the commercial.
You can be CFI checkride ready immediately after your Commercial checkride, ...aaand your Commercial checkride will go really good.
Also, if an LSA is available, get the Sport Instructor rating at 150 hours.