Wakie talkie, begining

Come back to my old project, walkie talkie. When I tries to offer a new project, I develop a principal schematic instead of structure schematic. In my opinion it can answer to most of question of people who interests in my solution. But on the practice that approach motivates random commentators from the internet to proof me that my solution does not work. Forget about they. 

So, schematic of my gadget includes all 0,5-3$ junk from aliexpress and consists of:

1. 64-pin 32-bit STM32F107 MCU 
2. 443MHz 4-FSK transceiever CC1101
3. Audio DAC PCM1754
4. Headphones power amplifier LM4810
5. Stereo digital FM radio RDA5807
6. 1-MHz DC-DC converters ME2149
7. 128x64 monochrome OLED display on SSD1306 controller
8. Buttons and encoder for user interface
9. Microphone with pre-amp
10. Micro USB and SD-Card connectors

All of that parts will be tested and posted separately before main assembly. Schematics: