How would you defend this home planet?

The only way to defend this homeworld is to capture and fortify the 3 adjacent planets. All of them. Leave one out and every single exo and CPA will come from that right to the homeworld.
Actually in this case.. even capturing all 3 adjacent planets might not work.

If the AI attacks from the REM-Z21-63 wormhole you won't be able to stop the attack because it's so close to the homeworld's wormhole. Sure I could neuter REM-Z21-63 but CPAs and Exos could still use that wormhole.
Instead of Gleason I could fortify Imrik which is a good planet.

The 2 wormholes I need to defend in order to keep my homeworld safe (Gleason and REM-Z21-63) are close to each other and far from the hostiles wormholes. However.. if I fortified Imrik I'd have to fortify Vulputate which is a HORRIBLE planet to defend. Impossible. There are 2 hostile wormholes right next to the wormhole I need to defend and I'd have to defend almost 180 degrees.

Defending Flanderin isn't possible either. You can only defend one side of the wormhole effectively. Not 360 degrees. (about 80 - 90 is pretty much the maximum)

Thanks to Gleason, Flanderin and Vulputate it's not possible to defend this homeworld. Not on vs 2 10 diffs. I can already see it without playing.
Defending this homeworld could be possible on a lower difficulty level though.
It could be possible to defend Mardia

and Kathwallace

If I had those fortified I'd not have to defend Project Metacalf.. so I could defend Flanderin vs Jataka wormhole. Then I could dump like.. 30% of my defenses on Gleason and 10% or 5% on REM-Z21-63 as beachhead defenses in case of CPAs and Exos.
There would still be a problem.. capturing Gleason, Flanderin and Katwallace would be a suicide. Gleason has only 3 resource asteroids, Flanderin has 4 and Kathwallace 0. Capturing a planet with less than 5 resource asteroids is basically a suicide.. well at least on 10 diff.. and on a real map (Simple or Realistic).. not some dumbass tunnel map where you can defend your 20 planet empire by blocking 1 wormhole.
Anyway.. capturing and fortifying these 4 horrible planets would cost 113 AIP. 80 from capturing the planets and 33 from neutering the surrounding planets. Now the homeworld would be safe from waves and CPAs.. but all of this hard work would go down the drain when an Exo spawns on Brunowalter or Juliet Xray. So because of that (and because I'd need more energy and resource asteroids) I'd capture Juliet Xray and Ascs J46 for energy and +15 resteroids. This would cost me +55 AIP. All of this would cost 168 AIP and a lot of time.
Again.. this might work on a lower difficulty level (+/- 8 maybe 9). On 10 difficulty 3 whipping boys is max.
Any way to make CPAs and Exos "not so PITA"?
Added the save file.