There's no easy answer for your question ,really.I think,that if you wanna check out States,you definetely should,it will be a useful experience,culturally,musically etc.As far as working,I think it depends on a couple of things,first,you have to understand,that if you wanna be making living playing music,you should forget about such thing as turning stuff down,I mean,you will have to do EVERYTHING,playing(all kinds of stuff,clubs,private parties,corporate events,barmitzvas),teaching,studio,you name it.And in order to do this you should:
a) know a shitload of jazz and pop standards,etc.
b) be able to sight read really well
c) be able to play in different styles
d) have great social skills(nobody wants to be dealing with assholes)
e) speak good english
Well,that's a start.We not gonna talk about things like having good sound,chops,improvising ability,that's obvious.
Second,you should be ready for the fact that no matter how good you are,it will still take you at least a year before you'll start making any money.
Now ,if you want to do nothing but original music,that's totally different story.You gonna have to work some kind of day job,'cause club gigs don't pay shit,$70-$80 at the most and the average rent is,let's say $600(that if you share an apartment with somebody,if not,it's much higher),plus you have to eat,pay bills,so you do the math.
About your playing: it's hard for me to say anything after only hearing this little piece,I don't know,maybe you can sight read anything in any tempo and style,or you can play great lap steel or whatever.You should judge yourself,but try to be honest.
Hope all this is helpfull
If you got any more questions - don't hesitate
P.S Guinga(g-i-n-g-a) is playing in DC in January,I'm gonna try to meet the guy.If you really want his stuff that bad,I can mail you a couple of cd copies,just send me your address.