[flexxaeon]

For problem one: Pick one of your ideas (your favorite, or the one with the least competition, bonus if it's both of those things) and then ignore the other(s). Work the one project until you feel you've done all you can do. At some point, getting project A off the ground is going to get hard, and this is when you'll be tempted to move onto project B. This is also when you must focus on A even harder, and act like B doesn't even exist. If you don't learn with A, you'll run into the same issues with B and will be holding onto 2 abandoned projects eventually.

For problem two: You're right that connections are key but don't think that these connections only exist in SV or the USA. Go to every startup/tech/niche related event that you can in your area. Even if you never meet someone that is 'directly' connected, you're likely to meet people who are connected indirectly, or with access to a hub/outlet that you may have never thought of. If you make enough noise in Easter Europe, SV will come to you.