What DNxHD format should we use?

Hello,

I am to edit something that will be shot overseas. These are the options they gave us for what they can stream/record in:

DNxHD 220x, DNxHD 220x MXF, DNxHD 145, DNxHD 145 MXF, DNxHD 45, DNxHD 45 MXF for 720p and 1080p HD formats up to 60fps

DNxHR HQX, DNxHR HQX MXF, DNxHR SQ, DNxHR SQ MXF, DNxHR LB, DNxHR LB MXF, H.265 SDI 4:2:2 10‑bit, H.265 High 4:2:0 10‑bit, H.265 Medium 4:2:0 10‑bit, H.265 Low 4:2:0 10‑bit

Which of the above options is best for these delivery specs?: MXF OP1a, XDCAM HD422 1920x1080i at 29.97, 50 Mbps CBR, long GOP (12 frame)

Any help is appreciated, this is the first time I've dealt with something shot in this manner. Thanks everyone.