Schematic review

Good morning, 
I ended up changing the design to use the nRF52810 chipset and I wanted to find out if Nordic would be able to provide some schematic feedback for my design. Below is the schematic: 
I have a couple of questions I wanted clarified: 
1. On the reference design you have a 10uH and a 15nH inductor in series for the DC/DC regulator filter. Is the 15nH inductor necessary? 
2. I have used the following xtal crystals for the 32.768Hz and the 32MHz frequencies respectively: 9H03280012, and 8Q32070006. Will these work well for your chipset? Also recommended known ones you have used in the past if these don't work. 
3. I am using this chip antenna on the board, let me know if you foresee any issues with this: w3008
Looking forward to hearing from you. 
Many thanks 
Tinashe
Google
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