Hub questions and spoke length...

Hello guys, I have a couple questions about getting the correct spoke size for the new wheel I'm about to build. The hub is a Bulletproof brand, and the rim is a Sun MTX33. The hub that came on the front wheel was a sock QR hub that was poor quality. Anyways, I pulled off the spokes and nipples and the spokes measure 254mm. Here is the link to m rim and hub. I am hoping that the spoke length is correct, and if anyone knows anything about the Bulletproof brand.
Hub: https://bmxmuseum.com/forsale/289707
Rim: https://www.chainreactioncycles.com/us/en/sun-ringle-mtx-33-welded-mtb-…
Thanks!