I'm assembling a 500 points list to both learn to play Raptors and the game for 11th ed. Since I'm not familiar with Space Marines(setup and equipments), I can use some help

500 Points Raptors(445):

Detatchment: Vanguard Spearhead

-Lieutenant in Phobos Armour(55), Warlord
-Eliminator Squad(85): 3
-Infiltrator Squad(100): 5
-Invictor Tactical Warsuit(125)
-Impulsor(80)

This is the list that I kinda assembled out of vibes, but I can use some help.
I very much appreciate any constructive criticism for this mess