Trans Siberia?

I have put my mind back on my trip next year. I've bought the ticket for Tokyo, London - Milan - Tokyo! Seems an odd way to go but it is cheap. Now I am really committed, the question is; what am I committed to? I have spent ages thinking over the problem of visas, particularly the Russian Visa which is tricky, if I travel east to west this is a major problem. One answer seemed to be to get an agency to buy my ticket from Irkutsk to Moscow, but how would I pick up the ticket, I can't pick up a ticket in Moscow and they can't post it to me as I will already be away, finally I have changed my plans completely. next year will not be the year of the Trans Siberian, I will do that in a couple of years when I also visit Poland and the Ukraine. Next year is now going to be Japan, China and Mongolia. This will give me longer in China and a more relaxed journey. I thought of journeying back via Korea, recent troubles have made that impossible, I just hope that China and America don't enter into a full scale war else my whole plan will go ape. I must get my insurance quickly!