There's better choices than AF3 if your weapons delay permits. Admittedly we are forced to utilize the Head/Body/Legs if we wish to maintain a 5-hit build with a 437 delay such as Masamune.

But if you can work around it (possibly with Moonshade earring with Regain & VV atma in abyssea) you can use the Juogi/+1 and Zelus Tiara (although, the latter isn't very Ronin). I could work it out my it's too late for me, if you have Double March, Haste and Hasso on you at all times it might not work out.

If it does then you can cap equipment Haste while looking semi-Ronin.