Whoever you got it from didn't send/sell you the matching spoke kit? I can't tell you the length, but can tell you it's a 2-cross pattern like with a Red Baron/Sano/Bombshell fork kit set up. There's a lot of pictures of those floating around you can find to see the pattern if you don't understand what 2-cross means.
i bought the hub from motoworld but it isn't clear if the kit includes the spokes or not so i bought some from red barron but they don't look like they are the right length. i laced the bombshell front hub before but this one doesn't seem right when i get it in the rim. the one i'm doing now is for a freind and he bought the spokes and hub from red barron. i think they sent me heavy duty spokes for a stock rim because the ones he got are 7/8ths comparred to the 5/8ths they sent to me.