So I've been looking to make an Iron Warriors army as the title suggests. Never really got into Chaos on TT but figured I'd try and start. Looking for suggestions to fill out the bulk of the marines. The big question is would be better to go for the 20 count Forge World squad (https://www.forgeworld.co.uk/en-US/Iron-Warriors-Legion-Tactical-Squad) or get some normal CSM with the Iron Warrior Upgrade kits (https://www.games-workshop.com/en-US/Chaos-Space-Marines-Squad-2016 + https://www.forgeworld.co.uk/en-US/Iron-Warriors-Upgrade-Set) when it comes to customizing the squads, easier/mitigating conversions from 30k>40k, ect. Let me know folks! Thanks.