Pipe in pipe is really frustrating to do and you have to be really good at it. Getting the measurements right the first time is absolutely critical, and there is almost no room for error.
Hose in hose will make your life easier. Of course your stand pipe can't be hose but the inside one can be. At the top, use a 'hose barb' to convert from hose to pipe. A hose barb has the ribbed fitting on one side for the hose and male or female pipe threads on the other side for the pvc pipe.
For directional nozzles, use two 90 degree fittings and a cap. The two 90 degree fittings will allow you to direct the flow in any direction. The cap is to serve as a nozzle if you so desire. Just drill the size hole that you see is appropriate. The smaller the hole, the more localized current it will produce.