Hi to all! We are in Cape Town now and want to go home to Russia with west coast. We already obtained visas for Angola, DRC, Congo and Gabon in Pretoria. Any advices about good route through this countries? Which entry point is good to cross from Angola to DRC to not have issues with visa issued in not your own country?

I will update this post from time to time with our route.
We crossed border between Namibia and Angola near to Ruacana city.
Namibian side was easy except looks like that custom guy not here biggest part of the time (just ask somebody to call them).
On the Angola side I spent half of hour to teach official in immigration to some russian word (Это не проблемма подруга! Я люблю тебя!) before our passports was stamped. Also they said that Angola have no deals wit carnets and we were have to pay 65$ for temporary import of our bikes
After crossing we followed a road/track to Cahama village and it was nice road. We saw some spectacular baobab fields and some people who using bows for hunting and walking partialy naked with all this special things on the legs and necks (and it was not a show for tourists because there is no any tourists here). The road was sandy with the deep traces, should be easy with the car but took us ~6 hours with the motocycles.
We meet IanInDRCongo and his companion in Ruacana day before to disscuss some alternative routes through DRC. He said that there is exist some good bridge near to Matadi as alternative way to ferry. Anybody have some ideas if this bridge is usable for such travel? Because according to my tracks4africa you can cross the river with this bridge but there is no any roads on another side (according to michlen maps roads here, but conditions...).
Also we not having idea about where to cross border to DRC to not have issues with our visas issued not in our country, probably it will be Luvo border post.