Decoupling a Microcontroller/Development Board Design
AVDD should be filtered as much as possible, e.g. it should provide as clean as possible voltage in all circumstances, no matter how dirty the input/digital power is. Maybe use 10uF or 100uF instead of the 0.1uF you've calculated. A good option would be to use a separate linear regulator for the AVDD. 

One option would be to connect AVDD through two pins and a jumper in between so you can break the connection. If it should happen that you need a cleaner AVDD in the future, you could remove that jumper and add external clean AVDD power for the application. You can't think of everything aforehand. Give yourself some options such as this to change things in the future. 

Add extra pins for measuring and debugging the board and especially extra GND and VDD pins for connecting external equipment, pull-ups, pull-downs etc, as well as oscilloscope probe ground. It wouldn't hurt to design in an extra pin header connector with 8 data bits and ground for connecting a cheap logic analyzer. And for the regulators, just follow the advice and example shcematics in the regulator data sheets. Good luck!