Advice Please! I'm about to change my notebook for better Hitfilm performance.

I'm gonna change my notebook for one with better qualities, specially for photo and video edition (a.k.a. Hitfilm)

My old note is Core i3/RAM 4GB, and my plan is to change for something with a minimum of 8GB and 4GB graphics but most of the affordable options are Core i3. Should I wait and save more to go for an i5? or it will work fine (with a nice flow) with 8GB of RAM and 4GB for graphics still being i3?

Thank you in advance.