Hello dear friends, this coming month I will be shooting my first wedding. My friends are Seminary students and really can't afford to hire a pro. That said i need your help! I have nikon D7000 and Nikkor 18-105 (but this lens is slow and not sharp) I want to buy used Tamron 28-75 2.8. I read a lot of good thinks about it; it is fast and affordable. What do you think, shout i go with it, or should i buy Nikon SB 700 and just shoot with my kit lens? Thank you in advance. And God bless you.