Oh wow, I can only imagine what SteemFest3 would mean to you! Sounds like a great adventure for more than 1 reason - solo travel is so empowering, I love to do it, makes you feel strong and independent and just so much more excited about every decision you make - because it's 100% your own.
I'm available for questions on travel in Europe if you need it :-) Good luck preparing - I hope you'll find ways to get your funds! :D