The highest risk with such a coil is self-capacitance, that can potentially bring the self-resonant frequency too low, potentially outside of the LDC1000 range.
Low resonant frequency also means that detection of thin object will be problematic
To mitigate the risk, one can make fewer turns, removing half or more of the inner windings. Then inductance will still be sufficient for oscillations while self-capacitance greatly reduced.