I've always used Belgian-style Maple Josef Teller or Aubert Mirecourt bridges for my Yamaha SVC-200.  As far as strings go, you cannot go wrong with D'Addario Helicore and Kaplan series strings.  Kaplan is a bit more expensive, but it has a richer tone, but for my daily warrior, Helicore is hands down my first choice.  The steel core is perfect for my electric Cello!  Ships from and sold by Amazon,...Arrived two days early....ON A SUNDAY!