Help on Chronomon

Can anyone give me advice on beating the Healing Plant and how to get a Digivolve Disk?
My team is:

Main Team
Rosemon Level 51
Moves: Razor Claws, Needle Spray, Pure Temptation, Rose Rapier, Lightning Arrow and Acidic Saliva
Equipment: Daoina Dagger, Flow Wreath and Damage Ring Level 40

Phoenixmon Level 50
Moves: Charge, Laser Blast, Crimson Flame, Force of Life, Hurricane and Guardian Angel
Equipment: Stormmaker, Irataka Br and Ultimate Ring

Zudomon Level 51(MAX)
Moves: Straight Punch, Evil Wave, Harpoon Torpedo, Vulcan Hammer, Hydro Freezer and Melodic Waves
Equipment: Trent, Ent and Damage Ring Level 40

Relief Team
MagnaAngemon Level 41(Still training)
Moves: Charge, Celestial Rod, Excalibur, Photon Rain and Mystic Aura
Equipment: Excalibur, Cross Shield and Damage Ring Level 1

MetalGreymon Level 44(Still training to be WarGreymon)
Moves: Straight Punch, Fiery Breath, Giga Blaster
Equipment: Ultimate Sword, Ultimate Brr and EXP Ring Level 40

MetalGreymon Level 35(Still training to be BlackWarGreymon)
Moves: Same
Equipment: EXP Ring Level 20

And when do I get Scan Data from ChronomoDM/HM? After beating him or when i am scanning him?

after you beat chronomonDm, u basically finish the main game. after beating him, u see that credit things and such.
after that, u just have to go to the place where chronomonDM was, and u will see chronomonHM. beat him and u will get 100% scan data of chronomonHM only.