As much as it might be a pain, I think you'd have to do both.

There are some folks who will just buy based on a recommendation from a trusted friend.
There are some folks who will want to read everything they can, but may not be able to interpret the second-year-engineering charts.
There are some folks who ARE engineers, and will want those charts.

It's only more work and money to produce both, right?

Personally, not seeing it I don't know if I could interpret option 2 properly or not.....so, I'd want the option of both just in case.

Jarrod