You know a Hellfire is only one and a half metres long...? So it'll be about...3 tiny squares in size. But not even that, cos its about 18cm in diameter. Sidewinder is one of the smallest AA missiles in service at 3 metres long. Good luck making that in SFS.
Phoenix, possibly the largest AA missile in the world, is only 4 metres long.
Even Bloodhound, a bloody great big SAM missile used by the UK for many years is just over 8 metres tall. They're all going to be fuel tanks with engines attached.
Why not, rather than making pointless simulacrums of weapons you can't use, make... not weapon rockets...instead...and visit the solar system...
I dunno.