Framing this research question: How far in advance do single tix patrons make purchases

Hi friends-

This question comes up: How far in advance are single ticket buyers getting their tickets, and how can that inform some of our media buying? Before I dive into a report or analytics or anything like that, I was trying to think about how I might actually want my answer to come together. (This may be particularly relevant for presenters and others that do multiple short runs, like symphonies.)

I was thinking I might need to stitch together a few data points to get a clear answer. Such as:

• Leading up to a concert, are there any particular weeks that often show the largest number of tix sold? Like do most people buy in week 3 before a concert?
• What percentage of the single ticket buyers purchase tix in the x-number of weeks before a concert?
• If I plotted this on a line graph with a total tix sold for each week, I could see where there might be some spikes. 
  
  

Have you done something like this? Any advice? I'm an Olympic-grade over-thinker. You may have been able to get a good answer with a simple chart. 

Many thanks!