In our area, its fairly "normal" for showings to happen after accepted offer to minimize disruption to tenants. 

These sellers might be more open to offers to accept payments over time. 

When they do, you can refinance to a lower rate.Dealing with current high interest rates (about 7% on 01/27/2025) you have the following choices:A larger down paymentAccept a negative cash flowBuy down the interest rateCombine and balance all three to get an acceptable cash flow today.

Once the sellers accept the offers.. 

Imagine if it cost 1000 to send out 50 letters but half of them responded and half of those wanted an offer and half of those accepted an offer and half of those closed and half of those resold for a net 50k. 

If they are up for renewal and you elect to non renew them you must stop accepting funds from the occupants after the lease expires (accepting rent after the lease expires may make it appear you have a tenancy at will agreement). 

I haven't accepted the offer.  

My offer got accepted for an investment property in Pennsylvania.

I would invest in Sunrise Capital, but I didn't get the impression that they would accept $50K as an initial investment, which I always like to do to try out a new firm (for me) and to diversify geography and risk.

You can also seek projects through licensed Portals that are using Title III and can accept money from non-accredited investors.