So the irrigation system is pretty simple. I got a Wayne semi trash pump with float on it from Northern Tool. It is rated for like 3900 gph and has a 1 1/2" outlet. I used a threaded PVC male adapter to thread into the pump outlet. I wanted a rigid pipe to come out of the pump and then I can either hook it to sections of PVC or I can use the PVC discharge hose (I use both since that is what I had). Once I get the 1 1/2" onto dry ground, I used a PVC y pipe to split the stream. From there I used PVC reducers and necked it down to 3/4" (two of these equal the 1 1/2" input). From there I used 3/4" pipe since it was cheaper.
I thought about using only 1/2" pipe and splitting the stream with a 3 way y pipe, but it really wasn't any cheaper than the 3/4" so I stuck with that. Then I used PVC T connectors that had 1/2" threaded on the top of the T. From there I was able to screw in the connectors you would use for your sprinklers. I tried many other types of rotating sprinklers and I just couldn't get enough pressure to power the bigger setups so on the areas closest to the pump I used these cheap $3 metal sprinklers and the added the bushes type the further away I got.