would be the correct order to process these tasks? Without the previous item(s), the latter item is harder to obtain and maintain at full functionality.
Be careful with that. There's a growing body of evidence that waiting too long to have children causes some disorders. EG Autism is far more common in children born to older parents. Money is an especially difficult one, as it's very easy to move your own goal continually upward. Happiness is also difficult, since it's almost always going to be a transient state and not a long-term thing.
A better list is probably:
Stability, Contentment, Kids.
When your situation is stable and you're content with how things are going, then consider kids. Don't try to wait until you're rich / happy all the time, it won't work.
I wasn't really meaning the As-Seen-On-TV "rich and happy".
I meant "happiness" more as the opposite of "pain and despair". If you are not in a place mentally to have a partner and children, don't do it.
Same with "health". If you aren't healthy, either by circumstance or by choice, you probably aren't ready for a partner or kids.
"Money" is relative. I really mean, if you have enough resources to provide for more than yourself. If you can't provide anything for a relationship, or kids, you aren't ready.
You could draw this as concentric rings of self-control, and only once you are in control of the inner ring, can you progress to outer rings.
You must control your mind, body, environment, relationships, and offspring. If you lose control of one of the inner rings, then you cannot control the outer rings.
A better list is probably:
Stability, Contentment, Kids.
When your situation is stable and you're content with how things are going, then consider kids. Don't try to wait until you're rich / happy all the time, it won't work.