Hello Notso.
You really bring home the size of your country when you say "I will have to travel several thousand kilometers to a hospital which does transplants". In my country it is impossible to travel several thousand kilometers without falling off the edge and drowning in the sea. Furthest distance you can travel in Britain is 1,407 km, that is from the south west coast to the far north coast.
I think you have made the right decision about what type of dialysis you will go for if you need it, that was what I was going to go for, but other medical complications made this an unwise choice for me in the end.
If your idiot nephrologist continues to fail to refer you then change nephrologist (either that or hit them with a big stick*). However if it takes time, do not wait too long to start dialysis. There is a story passed around the clinic I go to about a patient who was waiting for a transplant, so refused dialysis. This caused a mild heart attack. Not a serious one, no long term harm, except that the nephrologist decided that the heart attack meant they were now not strong enough to withstand a transplant operation, and they ended up on dialysis for years.
*