[Discuss] cheapest way to an Ironclad Assault

Hi all, I am trying to find the cheapest way to get to an Ironclad Assault. I have a Railen that I thought about trying to CCU but I feel like I can’t find any solid paths from the Railen to the Ironclad Assault.

I also have an Asgard but I use that as my daily flyer plus the Railen is my main hauler and I’d be upgrading to use the Ironclad Assault as my main hauler.

I do also have a 20% off coupon for use. Any advice would be great! Thanks in advance!