I am currently a minnow with approximately 570 Steem Power nowadays, and I supported you with my 100% upvote, which currently worth approximately only $0.006.
I am not even interested in SteemFest 4 (or in any other SteemFest), but I see how important it is to you, and I would like to help you with what I can. And every little helps, I think.
Currently there are 1133 upvotes on this blog post, and the current pending payout on this blog post is $25.38 USD.
I can't send you any liquid Steem, nor Steem Dollars (SBD), neither other coins/tokens, because I obviously use them to build make Steem account to make my upvotes more valuable, but probably some people will do send you some donations.
And you still have a lot of time (a little bit more than 3 months) until SteemFest 4.
With regular posting I am sure that you will get enough funds to be able to fund your trip to SteemFest 4.
All the best, and I wish safe travels to you and to everyone else!