1st rental property gets 10 interested on Craigslist. Now what?

[Rhondalette W.]

I placed my first rental property on Craigslist 3 days ago and 10 responded so far and are interested. Here is my plan, followed by a few questions, what do you advise? 

•  I have telephone screened a few and weeded out some who have pets and others who are smokers. 
• To avoid going to the property several times to show, I have decided to have an "Open House"  where all families can come view at their leisure (will be on this Saturday)
• I will have applications at the open house 

Here are some of the questions I have:

Q1: During my telephone screening today, one guy said that they recently filed for bankruptcy. but his wife is a Registered Nurse and they have no children, no animals, and are not smokers. They earn about 7X's the monthy rent. Do you all consider tenants with bankruptcy or should I totally avoid them?

Q2: What if I have several families 3 or 4 who complete applications, do I need to collect an application fee and run background checks on all? Do people get upset if they pay application fee but are not selected?

Q2: Is my application fee of $50 per adult in the family a reasonable fee? 

Thank you all for your insight...