It depends on what you weight contributes to, if it's muscle or if it's fat. If what you have is all just muscle, and hardly any fat then the need to lose weight is not there. If it however is fat, then shedding a few kilos here and there couldn't possibly hurt. Your beep tests are excellent, so that'll always factor in good for you. I'd say you've got a good start to your career there, just remember, practice makes perfect. Never stop training.
That is an awesome start to a rugby league career. However, if your bulky(Which you probably are considering your fast for your weight and able to reach 7.5 in the beep test) I'd say you should play second-row as you aren't tall enough to play prop plus you've got good speed for 98kgs! Personally stick with your weight but if you disagree with second-row, stay with prop and work on your height. Good luck junior James Tamou
Beep Tests are fantastic. You are indeed the pick.