Dragonite TM

Personally, I won't. Hyper Beam is Dragonite's worst possible charge move. I would not rush TMing that Dragonite in your case since Hurricane is a pretty good move and all other soon to be legacy moves are mere speculation. Just raid for now and gamble when you have at least another TM to spare in case you get HB. Hurricane isn't realy bad. It's just that Outrage deals twice the damage for the same energy spent.

With one roll of the dice, no. As everyone here believes, Dragonite will soon be a raid boss, and you can find your one with outrage that way (if it still exists in its moveset).

If you are concerned about moves becoming legacy, it's worth to get all movesets a Pokemon has as possible, especially Outrage on Dragonite.

I wont.I tried changing my hurricane dnite to Outrage but got HB instead then got it the next time I used a TM.Evolved a second dragonite which also has Outrage.I shouldnt have change my first Dnite since dodging is much easier on Hurricane...