Your choice of selecting PSoC 4000S chip is good. It has the latest CapSense IP and supports much more parasitic capacitance (upto 200pF) on the CapSense sensors when compared to other PSoC devices (upto 45 pF).
The chip contains the latest version of CapSense component i.e. CapSense [v3.0] which is advanced when compared to CapSense CSD. The main differences between those two components is mentioned in the page number 113 of the document obtained from the link below. Please go through it.