The breh
@BuddahMAC prolly has more insight on specific details than me, but they were one of the first acts on Wu-Tang Records, if not the very first one.
The first after Wu themselves. They dropped singles for Soldiers Of Darkness / Five Arch Angels & No Love Without Hate in 95 and Bloody Choices in 96, which is when Wu-Tang Records signed the distribution deal with Priority Records.
Their album got delayed for years, I wanna say due to mismanagement from Power and Divine?
Nothing to do w/ Power/Divine. As evidenced from above, they were on the process to a release on Wu-Tang Records and, before the distro deal, the label wasn't even in a position to drop full length, which ended up being Killarmy's debut in 97. Why didn't Sunz come first and why none of the songs so far on it? A couple issues:
1) They ended up going specifically to a new imprint Threat on Red Ant that paid like a half million to buy out Sunz from their Wu-Tang Records contract. Now, I don't know exactly why the release had only new songs (especially b/c they played the old ones in the backgrounds of interludes) but I imagine it might have something to do with the contracts of Sunz on Wu Records vs Sunz on Threat especially if the distro deal w/ Priority added wrinkles that otherwise Wu wouldn't have to worry about working around on their own label before. Threat is where the mismanagement happened and the Sunz album and singles are the only things that imprint ever released (and Red Ant itself was gone a couple years later).
2) While all that was being formed, Killah Priest solo deal overlapped w/ the Sunz album and the solo was priority for KP. That's why the most known MC of the group is only on 5 songs. This caused conflict within the group, mainly between P Sunn & KP. The Wu overall backed the group members which is why you'll find Razah, 60, & Prodigal all over Wu features the next few years (plus second Sunz album w/no KP) and KP largely on his own. They've worked it out since though. Now, maybe the building animosity effected the older songs or songs w/ KP specifically being included?
Even RZA had like 3 bangers on there that were some of his best post Wu-Tang Forever production. True Master & 4th Disciple had some really dope production as well. The MC’ing throughout was great as they really stuck to the formula of just spitting reality raps all throughout the album. 
