What would be your best advice to maximise the production gain from this planet?

6 space left, but If I removed the Matrioshka Brains and the Stellar Replicator I would have 57 space left to play with!

Extract and replace the Orbital Stabilizer so you're getting the full benefit of the moons.
Add another adumbrate station if you can.
Same goes for Isolation Bureau and Galactic Concord Station.
Adaptive Spires
Cognizant Omniforge
Xecti Signal Repeater for research
Extracted Lithovoric Stem for mining
Heist Dispatch Station
Quantum Accelerators (ideally set to artifact)
Barrier Nexus X 2 (for arti production)

As you start needing research less, scrap things like the Spy Uplinks and put the above stuff on to maximize AP production

Assimilation Locus(100% Upgrade) Mining: 8, Population: 400 Demolish
Interrogation Stronghold Research: 2, Defense: 300 Demolish
T.O. Manufacturing Core Mining: 2, Artifact: 2 Demolish
Scruuge Lab Mining: 1, Research: 2, Artifact: 1, Attack: 300
Hypergate Mining: 2, Research: 2, Artifact: 2 Demolish
Cognizant Omniforge Mining: 1, Research: 1, Artifact: 1, Bonus Production: 5% Demolish
Trellith Comm Relay Research: 2, Artifact: 2 Demolish
Intraphasic Hoveroid Bonus Production: 5% Demolish
Adaptive Spire Mining: 1, Research: 1, Artifact: 1 Demolish
Silthion Gas Vesicle Research: 2, Cloak: 150 Demolish
Omnibase Mining: 3, Research: 3, Artifact: 3, Attack: 1000, Defense: 1000 Demolish
Isolation Bureau Mining: 2, Research: 2, Artifact: 2, Cloak: 400 Demolish
HyperSensor Satellite Research: 2, Artifact: 2 Demolish
Sha'jha Uplink Research: 2, Cloak: 120 Demolish
Perimeter Station Artifact: 2, Population: 100, Defense: 200 Demolish
Perimeter Station Artifact: 2, Population: 100, Defense: 200 Demolish
Zolazin Analyzer Research: 1, Artifact: 1 Demolish
Hyperforge Fabricator(100% Upgrade) Artifact: 24 Demolish
Hyperforge Fabricator(100% Upgrade) Artifact: 24 Demolish
Omnistream Gateway Mining: 3, Research: 3, Artifact: 3 Demolish
Zolazin Analyzer Research: 1, Artifact: 1 Demolish
Adumbrate Station Research: 1, Artifact: 1, Cloak: 200 Demolish
Adaptive Spire Mining: 1, Research: 1, Artifact: 1 Demolish
Antimatter Drill Mining: 1, Artifact: 1, Attack: 400 Demolish
Extracted Lithovoric Stem Bonus Mining: 10% Demolish
Bioship Gene Lab Research: 1, Artifact: 1, Population: 200 Demolish
Temple of Reflection Research: 3, Defense: 30% Demolish
XTS-9 Silo Mining: 5, Mining Storage: 1000 Demolish
Voliir Transgenic Lock Mining: 1, Research: 2, Artifact: 1, Invadeprotection: 1 Demolish
Meta-Tuned Jammer Research: 4, Cloak: 10% Demolish
Sha'jha Uplink Research: 2, Cloak: 120 Demolish
Orbital Stabilizer Artifact: 2, Bonus Mining: 14% Demolish
DM79 Datacenter Research: 6 Demolish
Litheor Transmutative Locator Bonus Artifact: 6%, Defense: 10% Demolish
Xecti Signal Repeater Bonus Research: 10% Demolish
Litheor Core-Tunnel Mining: 2, Cloak: 15% Demolish
Captured T.O. Harvester III Mining: 2, Artifact: 1, Population: 600 Demolish
Galactic Concord Station II Mining: 2, Artifact: 2, Defense: 20% Demolish
Adumbrate Station Research: 1, Artifact: 1, Cloak: 200 Demolish
Sha'din Hyperport Network Research: 3, Defense: 400 Demolish
Tri-Phase Cutter Mining: 3, Attack: 300 Demolish
Tri-Phase Cutter Mining: 3, Attack: 300 Demolish
Lepus Chromatic Gateway Mining: 1, Research: 1, Artifact: 1, B Population: 30% Demolish
Alarri Comm Tower Research: 1, Artifact: 1, Cloak: 100 Demolish
Alarri Compound Turret Mining: 2, Artifact: 1, Attack: 15% Upgrade (50%)
Galakis Transport Mining: 1, Research: 1, Artifact: 1, Mining Storage: 400, Artifact Storage: 400, Research Storage: 400

Still a work in progress, but it's decent... Sadly you can't possibly have maxed lotus on now.
Gonna replace Silthion Gas Vesicle soon with stuff like Alarri Signaling Drone, but feels lazy atm.