Upgrade movesets from ok to great?

Espeon

Generally I wouldn't at present try to turn a good move into a great move, because you risk getting the bad move instead and TM's are rare.

BUT, since the pokemon you have here are high level ones which represents a huge stardust investment, that makes it worth it...eventually!

My thinking is that early on, while we are all thirsting for TM's, I would only use charge TM's if I have the worst charge move, ensuring that I get a better one.

However, as times goes on, TM's will become less precious as you earn TM's quicker than you get quality pokemon. For instance, most would probably struggle with earning more than 75k stardust in a week, taking ONE single pokemon from L20 to L30. I think you are unlikely to actually want more than one TM a week and at present rate I am certainly earning a lot more than one TM a week, which means that I will likely run out of amazing TM targets soon, which will allow me the luxury of trying for best charge moveset even if I currently have an OK one. So in a few weeks I'll probably try to change CC into DP on my 100% Machamp, SE into Crunch on one of my TTars, etc. But not just yet.

Also, this means that charge TM's will increasingly become MUCH more valuable than fast TM's. You will run out of good targets for fast TM's, but much less so for charge TM's. I'm thinking we could be talking at least 2 and more likely 3 fast TM's for one charge TM if trading was implemented.

I would probably only do Venusaur...97% and getting double grass is more useful than poison.

Petal Blizzard sorta sucks now (I have that move), but maybe Niantic will turn it back to two bars in the next update (same with Psychic)...

Machamp - just keep in mind KC is almost the same as counter when paired with DP or Counter (see pokebattler new attack rankings).
As mentioned above, I would do Venusaur now, Vape and Rhydon are currentlly raid bosses.

Gya- do some simulations, you might find that HP is better than Crounch even when dark is super effective as the case for Alakazam boss. At least per cycle DPS bite/hp looks better. Wait for psychic legendaries, than more in depth analisys will be performed for sure regarding dark Gyarados.

I would TM Alakazam and Venasaur for sure. Personally I would also do Espeon.

This is a different case than most because you've put so much dust into these. You can always go get more TMs....dust isn't so easy to find. And what is the point of having these super high level, high IV Pokémon if they don't have good moves?