So I'm still researching and trying to understand what makes a competitive bey for battles and hopefully get into some future tournaments but I want suggestions on what Tips, Drivers, God Layers, etc help my current set best and and suggestions for parts to get to improve the ones I have.

Current Beys:

Nightmare Longinius
Alter Chronos
Killer Deathscyther
Legend Spriggan
Drain Fafnir

Beys coming in(for parts reference):

Twin Nemesis(3H ul)
Dranzer Flame
Driger Slash
Dragoon Storm WX

Launchers(cause this might be useful):

Digital Sword Launcher
Heavy String R
Speed String L
LR String 


Based on the above what are good customizations/parts I should add to get the best performance when battling?

Next time try asking this in the Build Me a Combo Thread

Best things you can make with these parts:
Left-Spin/KO Attack: Nightmare Longinus Meteor Destroy/Hunter/Xtreme
Right Spin Burst Attack: Legend Spriggan 7/2Meteor Xtreme
Right Spin Defense: Alter Chronos (Stamina Mode) 7/2 Trans (Stamina Mode)
Left Spin Defense/Stamina: Drain Fafnir 7/2 Trans (Stamina Mode)

For Launchers, the Digital Sword Launcher is the strongest, but beware, it’s very fragile. LR Beylauncher is strong and durable so I recommend using that most.

You’ll want these parts:
Deep Chaos Layer (Top tier Right Spin Stamina)
Twin Nemesis Layer (Top tier Right Spin Attack for Mobile and Stationary)
Sieg Xcalibur (Top tier Right Spin Attack for Mobile and Stationary, optional)
Atomic Driver (hightly recommended for Defense/Stamina)
Orbit Driver (optional, can be used if Atomic is unavailable)
Cross Frame (For right spin Stamina/Defense)
Star Frame (optional, can be used if Cross is unavailable)
Glaive Frame (For left spin Stamina/Defense, optional, can be replaced with Cross/Star)
Bump Frame (For Attack, Meteor can replace it)

Best way to get most of these is through the B-98 God Customize Set.

Ah sorry for posting in the wrong thread I can move it(still new to this @_@) thanks for the suggestions!