How can I spread out my HMs on my pokémon without making any of them too weak?

I would like to have the HM moves while avoiding any HM slaves, because I would prefer if all my pokémon had at least 2 decent moves to use in battle. I don’t need all the HMs, though. Here is a list of the HMs and whether I need them or not. (I am playing Alpha Sapphire)

-Cut: Not needed, I do not need to use any of the shortcuts-Fly: Not needed, Eon flute can be used instead-Surf: Needed for crossing the large amounts of ocean in Hoenn-Strength: Needed, but not very important-Flash: Not needed for any reason at all-Rock Smash: Not needed, I am not interested in smashing rocks to get items and they only get in my way on one route, which I can easily fly over instead-Waterfall: Needed (can be removed though, only needed to access secret base)-Dive: Needed for diving

So the HMs are surf, dive and waterfall, maybe strength too if it could be placed in.

Here are my Pokemons moves (HM moves not listed)

Swampert:-Sludge Wave-Hydro Cannon

Porygon-Z:-Recover-Hyper Beam-Tri Attack-Zap Cannon

Togekiss:-Aura Sphere-Extreme Speed-Retaliate-Flamethrower

Kyogre:-Waterfall-Hydro Pump-Sheer Cold-Origin Pulse

Empoleon:-Blizzard-Hydro Pump

Diancie:-Diamond Storm-Moonblast-Sandstorm-Psyshock

Since I am still new to pokémon, I am not sure how I can keep my pokémon with strong moves while still having the HMs I need. If theres an HM that I should or shouldnt have, suggestions for that would be helpful. Any other move suggestions would be great too!

Pleaselog inorregisterto add a comment.

Being that this is an in-game team give: (My assumption as you didn’t give enough info like stats)

Reason: You had two open slots for it so I filled it in. Also it will get STAB.

Reason: Again, open slot.

Kyogre has Waterfall already.

See? That wasn’t hard decision making.

Hopefully I’ve Helped!