One thing that I've noticed about people when they have a dilemma is that they often think that they have only two options, when in actuality there are an infinite number of possibilities.
Why not kill two birds (study aikido and make money) with one stone (a trip)?
Sell your stereo, buy a ticket to Tokyo, teach English and sign up for classes at Hombu Dojo, the home of Aikikai.
P.S. One can aquire a student visa by studying at Hombu Dojo.