Yes, 994 should be the end of Volume 98 (assuming its 10 chapters). It would match the flow of volume 97, where Yamato's design was teased in 983, but the face not shown until 984 when the volume ended.
Teasing a character this chapter then revealing it in 994 would align with the volumes generally ending in big ways. For reference, volume 96 ended with Kanjuro being the traitor and Luffy, Kid and Law showing up.