Need help/advice

I am meaning to add a new Fujifilm camera to my kit.

Below are the 3 options available for me. Please suggest what would be ideal. I already own a xt100 and a xc 35mm. I shoot weddings, product and corporate shoots.

1. Fujifilm xt5 with 15mm-45mm - $1822
2. Fujiflm xt50 with 16mm-50mm - $1852
3. Fujifilm xt50 with 15mm-45mm - $1500
4. Fujifilm xt5 - $1650

Is 15-45 worth paying the extra $172 if I am going with xt5?