I have an Aventon Aventure with a battery blender & swappable 20 ah LiFePo4 with a 35 ah arriving this week. I’ve got an ebikeling 1200 motor watt & controller running through that battery blender ( so I can run both controllers with any 1 battery or 2 at a time. )
For cargo space I have the Topeak MXT rack & EXP trunk bag, and a Burley COHO XC single wheel trailer with their paniers & rack.
I don’t know what I would recommend except to someone else my weight ( I’m heavy ).
I would feel comfortable telling anyone in my family to pick the Aventon that meets their needs pretty comfortably - ( cargo bikes, folding , etc ).