Newbie - Looking to rent my primary residence while I travel

[Amanda Woodfork]

Some of his texts...

"I just want to make sure I don't miss out on something waiting"

"I guarantee if we are your renters the house will stay in great shape"

"if you choose someone else please let me know so I'm not waiting"

"my wife loves it how do I at least get first options?"

"Oh it's through a realtor? I thought it was individual. Either is good with me...realtor costs you money is only difference"

**sends me a screenshot of his FICO score

"Shows I've only been late 3 payments in 7 years and I'm sure those are bs cause I don't make late payments"

"Just trying to make you feel comfortable that I'm serious and good choice if we like it" 

My question - is this normal? He's currently the only person interested, but I haven't signed with the realtor and put the property on the market yet. What can you tell me about NOT using a realtor? Do any of you handle your own applicant screening and contracts? 

Please note that I have ZERO experience with landlording and I understand I have a lot to learn.