As a newbie the one thing I keep coming back to is the market research. 

We are currently learning the market here, it's quite different from what we are used to. I

Looking for advice on which address I should send a "I want to buy your house" letter to.  I

They normally will go up to I believe 70% to 75% CLTV.

You can still give them the option to pay if you want to, but you don't have to.  I

The lease agreement you linked to is out of date and I'm not sure if the current agreement covers your questions but there are legal parameters regarding penalties you can impose on a tenant.    

Here is what it says:"Upon any failure of Resident to occupy the Premises for the full term of a fixed term tenancy, for any reason other than as provided in ORS 90.453(2), 90.472 or 90.475, Owner/Agent may charge Resident either:---A)all of the following: i) all rent, unpaid fees and other non-rent charges accrued prior to the date that Owner/Agent knew or reasonably should have known of the abandonment or relinquishment of the Premises; ii) all damages relating to the condition of the Premises; iii) an early termination fee in an amount not to exceed one and one-half month's stated rent and which is due on the earlier of the date Resident gives notice to vacate or the date the Premises is vacated; iv) interest on the above amounts at the statutory rate from the date each was due, and v) all other amounts due at the times specified in this Rental Agreement; or prospective buyers or B) all actual damages resulting from the early termination, including but not limited to: i) repayment of concessions; all rent through the earlier date the Premises is re-rented and the lease termination date; ii) advertising and administrative costs to re-rent the Premises; iii) concessions given to re-rent the Premises; iv) the difference in rent if a lower rental rate is received from a replacement resident during the remaining term of the original Rental Agreement; v) damages related to the condition of the Premises, and iv) interest on all amounts at the statutory rate.

As for your comment about being registered, the service we are referring to is registered.

I think what @Chris Jackson was referring to is that there are a LOT of rules in regards to 'self dealing'.

And not worth looking further in to? I