If your budget is limited, I might suggest buying used. eBay is one place to look but might not get you a lens quickly. I might suggest a place I've used that has been great. It is mpb.com and they have many Fujifilm lenses. I have the 13mm Viltrox and like it. But, it might be nice to have a zoom capability in case you can't get close. I also have the Fujinon 16-80 which is an f4.0 (so, not that fast) but you can increase ISO to get those shots. I think you can get the 16-80 used for a good price. Good Luck.
