OK so I started playing online last night, absolutely loved it. Almost everytime I die though it’s at the hands of the DLR.
I’m up to rank 7 or 8, so I have 2 custom loadouts now. Like an idiot, I spent 3 SP unlocking the jet pack for a bit of fun. Bad idea. 
So anyone got any tips for weapons/perks for lower levels?
Cheers.
DMR/BR with Plasma Pistol as secondary…
Frags (Better with single/burst shot rifles)
Promethean Vision
Dexterity
Charge that pistol with your promethean vision on quickly switch to BR/DMR, headshot. Done. Good luck 
Think about what you like, and what gamemodes you play and buy accordingly.
For me my general allround setup is:
-DMR (1 Point)
-Magnum (Other weapons cost 2 SP)
-Frag Grenade (Again 2 SP for others)
-Jetpack (2 SP)
-Shields (1 SP)
-Dexterity (2SP)
I believe this is right.
So for 6 SP you can buy a pretty awesome general loadout, and than just mix and match while leveling up.
Want to try another nade? Just spend 2 SP, want to try the BR? Spend 1 SP.