That sounds like a pretty good estimate. Plus another 150 or so for the gears depending on where you get them. You may need a gear install kit. Not sure what comes with the gear set if you get all the shims and some gear oil and friction modifier and whatnot. Youll need all those as well. Ive never done a gear install so I dont know exactly what it entails but most of the other guys on here will be able to tell you exactly what you need in terms of parts.