FDC1004EVM: TIDA-00317 bare PCB making

Part Number:FDC1004EVM

Hi,

Now I try use FDC1004EVM and TIDA-00317 sensor to do capacitive level sensor evaluation.

Now question is that I am hard to procure the TIDA-00317 bare PCB according your referred design, have the below question:

1. This is 1.6mm bare PCB, but web or spec say it is FPC?
2. Can I change Pre-preg from 0.0276/0.7mm to 0.2mm, normally 4 layer PCB procedure is 0.2mm? If yes, it will change capacitive factor?
3. Seems that layer1 and layer4 are trace and shape, layer2 and layer3 are whole film? Can I just make just 2 layer FPC without layer 2 and layer3 because it will be easier to procure the board? If yes, it will change capacitive factor?
4. At the beginning I can procure TIDA-00317 sensor directly from you?

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Best Regards,

Kent