Experts - I have read this full thread and I'm looking at booking my 5th DONEX; mainly ex-JNB booked with AA and BA. I'm looking at ex-MPM now and have two questions on this general itin MPM-DOH-North America-Asia-Europe-JNB:

1. Who can I book with, using US based CC? My airlines are QR-AA-JL-CX-BA/QR. Or who is best/easiest to book with?
2. If I book separate ticket on SA JNB-MPM the morning of my MPM-DOH flight, do I need to get a VISA? Will MPM allow me to "connect" to QR flight without having to clear immigration/customs? Has anyone done similar travel via MPM already and have any experiences to share?

Thanks for any advice. Happy travelling.

cphurley