Wanting to upgrade my 2014 Stumpjumper to the BBS02, rough part is the Medium frame with it's 'weirdness' geometry means I can either fit a 48V 14AH MINI SHARK [with front shock completely compressed], or lift a bigger 52V [Jumbo Shark shown here also, fyi seat dropped full down] slightly above the top of the frame.

Does anyone have issues with the center of gravity being so high up for fast carvy downhills?

Is the 48V battery inadequate for longer climb-assists? Everything I've seen says dont keep on it long, and seems to be 52V fitted on MT bikes vs commuter. Looking to do rides like 10-12 miles, not overly rocky/technical but with 1400 ft elevation. I plan to pedal uphill but my gosh that's why I don't ride much- my shoes get worn out.