Lighting suggestions for shooting amateur runway at department store

I will be shooting an amateur runway show at a department store this weekend. The lighting is really bad, so I am looking for any suggestion how to light the runway.

I was thinking two speedlights left and right of me. One problem I am not sure how to deal with is the difference in exposure whether the model is in the far back or the front. How can I compensate? Or should I use a different setup?

Here is a photo I was able to get on how the location will look (https://imgur.com/a/ww7LQGn). Not sure if there will be a raised runway or not. Based on the photo it looks like the photographer on that day used a small softbox and a speedlight into the ceiling.