“can be enjoyed by everyone from mesivta bochur and up.”
Can be enjoyed and will be enjoyed are not the same
I find it hard to imagine, such a sefer becoming popular among “many top yungerliet ”
I think you will find more success marketing it to “non-top” bochurim and yungelit who are struggling a bit
and/or
People out of yeshiva as a reminder to the lomdus they once appreciated back in the day. “Relive the glory days of yeshiva ” or something like that
just my 2 cents