Replacing 28.8Mhz TCO with up-converted GPSDO 10Mhz signal?
I would recommend using a PLL chip that is capable of generating a 28.8 MHz output and can do so with a 10 MHz input.  

Take a look at http://www.analog.com/en/products/clock-and-timing/plls.html .  The ADF4360 could be a good choice.