DDS + PLL synthesizer for 144 MHz SSB/CW radio

I got a task to build a synthesizer for a home made 2m band ssb/cw transceiver.
- generating LO signal to 9 MHz IF. Output frequency is 135..137 MHz
- selectable frequency step from 10 Hz to 1 kHz
- VCO is controlled by ADF4116 PLL
- PLL reference clock is generated by AD9834 DDS chip
- output power is +10 dBm provided by MAR-3
- 20 memory
- RIT operation
- LCD display and six button