Smoke or particles?

Complete noob to particles an physics here. Never used them before.
Also, I’m stuck with version 2.76, as it’s the most recent that still runs on XP, which I’m stuck with because I have a very old machine with very old but expensive software on it I can’t replace.
Anyways, I want to animate a Starship launch.
My first experiment:
(Can’t upload ANYTHING today; not here, not to youtube, not through Data, not through wifi… Donno what’s going on).
There’s 3 kinds of volumetric things I need: condensation clouds forming around wherever cryogenic gases are vented, before and during liftoff. These are clouds made of water droplets condensing from the air as the escaping gas cools the ambient air. They drift randomly with wind, and move slightly downwards overall due to increased Density from the chill. Note that these clouds “disappear” (become transparent) after a few seconds, as the chilled air mixes with warmer air.
Second volumetric thing is the huge, growing white cloud at take-off. I believe it is due to jets of cooling water boiled off instantly, then re-condensing.
Finally, there’s engine fire, which is emissive as well as translucent.

Today I did my first experiments. First I tried “smoke”, but could not get it to work, at all.
Then I tried particles…
I still can’t upload.
They look like fluorescent fireflies. Not good. I need them to scatter the light they receive, NOT produce their own light. And I need them to grow in size while decreasing in alpha during their 10-second lifetimes; not disappear suddenly.
Wind doesn’t seem to work for me.

Anyways, my total noob question is, should I use smoke or particles? Any tips how to achieve my goals will be appreciated.
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Ah ok, now I can upload, finally.
Anyways, look at this reference of cryogenic rocket fuel venting mist,

My question is the same. Should I use parties or smoke? Smoke continues to not work for me.
Particles look too discrete. Even with a volumetric material they look like glass balls.
Not sure what to do.
Actually I was trying a material node, the past few hrs, but it didn’t work at all…

EDIT: Got the shader to work, but…


…but the material doesn’t seem to receive shadows, it seems to cast sharp shadows, and it seems to alpha to the sky, not to what’s behind it… or maybe it’s shadowing itself but sharply? Donno… Why is everything so difficult?

I found from reading other posts that smoke and particles can work together. So far I’m unable to see any smoke whatsoever. In this 3-second video I have particles AND smoke set up, but I only see particles:

Here’s my setup:
I have a particle-emitting ring, which also has physics enabled for smoke,

I have particles visible for debugging purposes only; I want white smoke instead.
This is what my particles tab looks like presently:

Can anyone spot where my error is?, like, why the smoke is not showing?
I also would like to have more randomness in the wind; it’s too laminar.