Newbie: it appears tank hoses don't come with new trailer

I've bough a few RV units and the dealers put a very simple starter kit in with a couple hoses and some black tank treatment samples. But I didn't dare trying to use the sewer hose. I use the grey and yellow Camco hose from Walmart, comes in 10' sections. I would say you need 20' of slinky stinky in two 10' sections and the sidewinder 20' support. I also highly recommend the clear plastic sewer cap with the handle for the trailer. Lets you know if there is something there to surprise you, mine has a small drain in-case a dump valve leaks on you. You don't make a mess trying to remove the cap with stinky stuff behind it!