You definitely want to rinse the sand. There are many threads on how to do it. Better if you do it outside. I am in an apartment and it took FOREVER to rinse it clean, using a bucket and avoiding getting sand down the drain.
I didn't rinse the soil. Just dumped it in the tank. You may want to keep it wet for six weeks before planting, I didn't soak my first tank, but am planning to wait two months soaking the soil before planting or putting fish in when setting up my 55 gal tank.also planning to use ecocomplete second time around, with some sand too.