150% Bowazone IAS?

I made multishoot/guided arrow Bowazone with 150% IAS, is this correct to do? I am using the Windroforce bow with a Shael rune in it and a Valkyrie Veil with a 15% IAS in it and a armor with life and 3x15% IAS and the glove with 20% IAS and the amulet with 20% IAS and the belt with 10% IAS it seems like I fire the mUltishoot very fast I just wanted to know if this is too much IAS or too little IAS or just right IAS

87 will max you outwith multishot windforce

You need to check IAS breakpoints. There’s a website where you can do this, and each weapon/class/skill has an attack speed breakpoint.