sell all your equipment....special equipment too. Then buy it all back and put it all in Speed. You'll have to spend some money....but DO IT! The quicker you are, the better. The more agile you are and the better you can see, the faster you will be...and the more able you will be to tackle or pass deflect or intercept your opponent.
Focus on Agility and Vision. Get those to the soft cap before you do anything else.
Train Confidence and Tackling...
I'm sure others might disagree, but that's my 2 cents.
SPD, AGI, and VIS are the three CORE attributes in being a solid LB. Your SPD is actually higher than I'd expect for your level. I think you need just a bit more VIS and AGI. Also, get that TCKL up because you will paying BIG time in the nerf to "wrap up" coming very soon. I don't want you to get hurt on that. CONF is also a very big key to being a good good LB that I have just discovered myself. Good luck in the future man. Pretty decent build so far.
I don't really think you NEED any more speed/agility/vision for a few more levels. The only attribute you're in need of is tackling, and that's mostly due to the upcoming nerf to wrap up. I'd get it up to 30 or so, personally. Then I'd throw some points into vision, and pick a SA you like, and put a few points into it. Personally, I think shed block is going to be VERY useful next year, assuming defensive AI goes live.