Welcome to the Cross Check world. I have the dark green one. I bought it frame/fork and put it together over time.
Currently I rock the Topeak explorer rack with grocery bag panniers made by Detours and sometimes I roll with the trunk bag that came as part of the rack deal. I would suggest the Tubus logo rack. It has the pannier bar lower than the top bar so you can put a wide bag on top. I have one on order.