my sincere apology to @bestdo and @tanghm as cant complete the weekly with them ytd night.. need to help out in the CE HM and eventually still didnt finish it.. zzz.. and thanks to boss doomer, didnt forget me when you reach the first CP

omnigul got cheese spot ( when u r in the room.. head towards the left side of the 'bridge'. that little room u can peek out and shoot.

for your other questions - the SPL is an event . now no more donno if it will come round in rotation again.

light level 200 dun worry. do more strikes . that's a good way to get higher light items.

scout/sniper for me i use warlock voidwalker. my melee/grenade is to help get out of sticky situations (i.e. more for defence not offence with energy drain).
different setup for pvp vs pve though.
coldfusion senpai is the warlock king u can ask him specific setups