Why do that? There are always going to be instruments that you can't afford that sound better than what you can. My first teacher was the great bassist Richard Davis. He taught out of the lower floor of his W. 87th St. brownstone, and had several wonderful basses, one, in particular, was the first lions head I'd ever seen and had a huge sound up and down arco or pizz and played like butter. One time I complained that my bass wasn't good enough. He said that a bass players job was to fall in love with the bass he has. Check out the Thompson hybrid bass from the String Emporium. A student of mine just got one, and it's very nice. A jazz player could have a career on it, and a classical player could go a long way with it, and probably end up keeping it forever as a second bass