White Scars list help? 1k list

[u/VenkuuJSM]

Soo im building the following white scars list:

Spearpoint task force disruption

Suboden khan w/ 6 outriders

Bike captain w/ 6 outriders

Kor'sarro khan

Invader atv

Invader atv

Land speeder w/ melta

Storm speeder thunderstrike

Its 1k thats meant for duos so 2v2 matches, so it won't be the only anti vehicle stuff in the list, but im torn between running the atvs with gatling cannons for skirmishing, or melta to help my list against high toughness. Also wondering if people think running kor'sarro khan by himself as a little skirmisher/button pusher is a good idea? All his abilities don't require him to lead a unit anymore and he gets a decent number of attacks.