If you need more power connectors you can use a flying bus cable to gain additional headers. However, you may experience more noise than if everything was on the TPS power board itself.
It is also possible to chain together two TPS80W power boards and power them from one power inlet. Note that you should only chain boards of the same type, so TPS80W boards should only be chained with other TPS80W boards.
Also, be sure to confirm that your power supply will provide enough for all of your modules by comparing its specs with the sum requirement of all your modules. Modulargrid.net can be a useful resource to determine how much power your modules need.