Are we crazy for doing a cash bar?

I know, all of you are collectively sighing and 🙄, but hear me out. Below are the reasons why we think this is a good idea:
1. Several guests have been to rehab for alcohol addiction and some should.
2. FH's parents are in their mid-70's and are very Southern and very conservative. I already got a stern talking to that a wedding is about the ceremony and not a big party from FMIL. His brother was married in the church and served punch in the basement after. 😳
3. Not knowing what to expect for an average bar tab for 100 people, we don't think we can't afford it/would rather spend our money elsewhere.
4. We got engaged in February and planned for 6/20/2020, but then at the end of March, I lost my job. FH is out of work because we left DC for the new job in NC in January. He works a part time side hustle. I make 3 times what he does so now it doesnt make sense for him to find a job because we'll likely have to move again for my line of work. There isn't much of a job market where we are for what I do.

(Wedding planning is the only thing that keeps me positive these days. Thank God we didn't book anything yet.)

So, on a scale of 1-no one will come to our wedding, how tacky is this and how do I break the news to our guests in a tactful way? I could be persuaded to do beer and wine only.