Send in your questions, too!
Hi Pavla. Thanks for your message. I'd be happy to provide insight into what I did for money along my similar travels.
I haven't taken traveler's checks anywhere since 2003 as they've never proven convenient. Those might be becoming a thing of the past. Of course, I've never found myself in a situation where they would have been helpful, and I thankfully keep a good hold of my valuables.
Instead, I've always just used debit cards to withdraw money in large sums. If you're going to be in a place with the same currency for a while, just take out as much as you can every time, so as to avoid excess fees. I consider those fees ones for convenience, because I also don't like carrying around a lot of money. I take out a couple hundred at a time, slowly use it, and give my credit card/debit card for purchases as much as possible.
One important note: make sure you have both a MasterCard and a Visa card, also at least one credit card and one debit card. That worked very well for me, because some countries only have one or the other. And if you need to rent a car or something similar, a credit card is far better. That diversity should serve you well. Keep them in separate places but always in secure spots (clearly).
If you run out, have someone Western Union more to you as you get your bank account sorted out. Hopefully this doesn't happen to you on the road, and with good planning, it won't.