At the start you want to focus your're entire production on infantry and support equipment.
You'll probably have enough of everythig else when the civil war breaks out.
Research only that which you're comfortable with you and Chrysalis having.
Disband your air force and destroy the stockpiles.
You can do the same with the navy but I prefer to leave them training for the xp.
After around 2-4 focuses the civil war should ignite.
The two divisions in the west are probably screwed so just let them make a final stand at Phantine.
For this strategy, regroup the rest of your infantry to fallback line like this.
Preferably straight with little gaps and covers at least Volistad.
If the line is ever breached send your tanks to deal with it ASAP.
For focuses, get Pharynx, Protect Volistad, and Antax industry.
After that you can pick whatever you desire, but do NOT get Hive militias.
You have enough reserves that the organization penalty just isn't worth it.
Recruit about a dozen Queen's guards and deploy them north.
They don't need to be trained but wait until you get enough equipment through focuses and industry.
As soon as they're in position, redeploy your old army south.
Even untrained, the guards should be able to hold the north easily.
Now that your lines are secure begin encirling any lone divisions.
Preferably with tanks.
As you kill and move into enemy territory, the ai will redeploy troops,
inevitably leaving more division isolated.
Chrysalis's industry just isn't good enough to ro signifcantly replace any losses.
Rinse and repeat and victory is more or less assured. I leave you with a timelapse.
Note: This was on Elite difficulty which made me too cautious with equipment loss and prolonging the war longer than it should have been. Apologies.