Fantic Rampage Lightest full suspension EMTB 15.5KG in best spec
https://mcusercontent.com/9bd522672dabe13201864a8bf/files/1bfbf341-3f8f-f68d-0be7-c285aacd4146/Rampage_Presentation.pdf
Hi,
My opinion as an EMTB dealer would also be to get the best motor/ battery option you can, since the fork/ brakes etc can easily be updated.
The price range you are looking at of 3-4k means you could potentially get a full suspension bike.
Some other hardtail options for you aside from...