Although I agree with Chicagoan and Lazyketa about expensive real estate in Kathmandu, I highly admire you for thinking of going back. Most of us (Nepali people) come from farming background. That's why most of us don't have a "soft touch" that is needed in business. You can clearly see that if you examine the business circle of Kathmandu. Many business owners are 'marwari'. Your business skill and a little bit of luck can take your far.

I have few old white friends. They didn't have AC or AC in car while growing up in the US in 60s-70s. Now, almost everyone owns a car. It was possible because of business successes. Whatever Nepali people say about India and the west, most of Nepali people like to consume the high end western products if they have money. 😉