I like to see new classic projects.
I suggest you aim for the pure PvP aspect of classic. You cant focus much on pve unless it goes hand by hand with pvp like RBs or epics.
Learn from lionna, europa, zaken and remorse. They failed bcoz they want to force the pve, none wants to pve anymore, its 2019!!!!
The success lies on something like l2devil but on classic chronicle. If you go for the mid rates server will die in 1 month, you can make it agonize for 1 more month but thats all.