I'd bet that nobody with a single working brain cell will sign a lease with your brand new LLC without you personally guaranteeing it as well.As for the writing style, this is totally subjective and unique to each person, but I think you can be professional without being overly formal.

I have his phone number but wanted to come up with a good proposal before I call him and pitch my idea.

Willing to chat more over the phone or Zoom if you’re interested. 

After my initial email contact with my mentor I wrote out a list of questions for our phone call and we worked our way through them during our call.

Forget trying to walk them through a simple repair over the phone, to avoid sending a ServiceTech and saving an owner money.

That's perhaps all the contacts in your phone, your FB and IG connections, your linked in connections. 

A phone call is far superior.

I just got off the phone with Dmitri from Eric Spofford's Office.

I created a Meeting for each prospect and enter their name, phone & email.

Make sure you choose a realtor who is used to travelling into your target community and not just engaging properties from behind a phone/computer screen.