do you have any jumper wires?
if so, just connect these to the necessary pins of the sender/receiver
for ground and 5V wire you could cut of the ends of the jumper wire and make an y-cabel with an luster block.
so your pins of the RF kit will stay clean for your breadboard setup.
regarding the question how to connect the parts to your pi have a look at this tutorial here :
the example is using the RXB6 receiver and should match your case. Just have a look and if there are any further questions you can use this threat. we will help