If you stick with your stock axles, then it should hold up, but there is always a chance it could break.. If you upgrade your axles and don't do the LSD, then something has to break.

I would stick with the stock axles until you can afford the LSD - that is if you don't mind changing your axles. Try slipping the clutch a little on your launches.

How much whp you putting down and what transmission do you have?