If you want to operate as a co-host, you'll need the property owners name on the lease and the rent payments need to go directly to the owner.

Evaluate your savings, income, and outgoings; moreover, educate yourself about mortgage alternatives and programs that help with a down payment.

Can anyone suggest any reliable vendors?

In the past I have asked for a higher deposit but I just dont want to deal with any potential non payment issues nor evictions. 

Especially for a tenant who has never done anything wrong in the first place, not even late with payment.

My current home loan is a heloc and its pretty much maxed out from using it for a down payment on the first property and its also climbed to 9% so I  need to get it redone to a traditional mortgage and get the rate down on it.

Even then you need a business license if you are collecting any kind of payment for it even if it is your place.  

Is he current on his payments?

So, if Title is held by the LLC and the mortgages are under your name, who makes the mortgage payments?

Avail is more limited to the tenant experience side of things such as creating lease agreements and accepting rent payments and deposits.