Help with paddles

I just bought 2 jackson riviera sot kayaks.I will be using it on mostly class two rivers. What kind of paddles do i need? Should the ends be rounded,feathered, or square?

depends on preference
Kayak paddles used on whitewater streams generally have rounded blades, either symmetrical or asymmetrical.

Whether to have the blades offset (feathered) or not, and if so, the degree of offset, is largely a matter of preference.

Two Rivieras here also
for the river I am using the Werner Tybee paddle in 210cm which works quite well. For an actual whitewater paddle with a little more blade surface, maybe checkout the Rio or Desperado… the available lengths may be too short for a SOT though.