Eurasia Trip

Do you want to sit on a train for six months or do you want to explore some places you've never been to. I am a believer in the less is more though i admit to going faster than ideal.

The faster you travel, the less you see, the more it costs, the greater the frustrations, the less satisfactory the trip, IMHO.

I would suggest saving as much as you can, and travel until your money runs out. Make sure you have enough to get home as it is not good to have to go home to a credit card bill - according to everyone i've ever met who's done that. You can always go off again.

Someone recently mentioned a website called savingforyourtrip.com I think and i tested it for my india trip. It wasn't bad, erring slightly on the more expensive side for a budget traveller I thought but that's better than under estimating. See if you can find it and use that to work out your budget. But also ask on the different branches what people recommend. Its one of those perennial questions that people don't seem to mind answering over and over.

If you were to go home overland from India, assuming you didn't want to travel through Pakistan which is not so pleasant these days in the South, you would fly to Dubai and then get up into Iran I think, syria and Jordan, Turkey, etc. I am not sure I have that in the right order but check it out on the map. But frankly I think this trip would huge especially on your own. Of course its doable, especially if you are a smart girl and do some research about where you are going so you don't get yourself into situations. And set some ground rules about staying out of trouble etc. Don't go wandering off with friendly strangers for example. Don't go wandering around in known bad areas, especially at night etc.

You are rushing it. A month to get to the Russian border? from where? Theres alot of Europe to see and there´s even more Asia. You might be best flying from Bangkok to India and not looping back on yourself.
Otherwise I think your budget is OK.

I alos think its a shame to whizz through Mongolia without stopping everyone I know who went loved it. And if you want to go in the Trans Siberian do you real think you could cope with a week non-stop on a train?
And China is fascinating (a month alone just to skim the surface) but you do seem to have planned for that.

I don't think you can do that all by train. I haven't been to most of those places, but I have researched similar routes. Crossings:

Vietnam - Cambodia: The most interesting route I saw was by boat.

Laos - I don't even know if they have trains. There's a border crossing with China, and it sounds fascinating, but it also is a bit off the beaten track: small villages, jungle, mountains, lots of buses. Get to Kunming in Yunan, and you're back near trains. Get to Chengdu in Sichuan, and you can catch the trains to Lhasa.

I think the plan makes more sense if you skip SE Asia. Do Mongolia / China (Sichuan, Yunan, Tibet) / Nepal / India ... and that sounds like 6 months!

Mongolia is one of my dream destinations, but I suspect that it can be expensive.