boots arent about what other people like. everyones feet are different and boots are not forgiving. you dont choose the boot, the boot chooses you (like some harry potter shit haha). please use the advice to go to a decent shop to choose boots.
as for skis and bindings, I think you'll want something from (approx) 177-183cm. Probably on the shorter end of that spectrum (most skis come in a 177, 178, or 179)... you have the size to handle 180+ but it's easier to handle shorter skis when you're beginning. bindings you'll want something with a max din of 12-14, and the shop you get boots from should check your dins on said bindings for free (or at least I think, never been in this situation). I suggest buying one of the many pairs for sale off of here (sell/trade forum) as most will fit those specs I just outlined, and there is nothing wrong with used skis, and itll save a lot of cheese in case you change your mind. you might just like snowboarding better.