We use OwnerRez.You can also go with a fully custom provider like Boostly but I'd recommend piggy backing on your PMS to get a "free" website so you can get a feel for it first. 

Most of our customers lately have been wanting duvet covers.

Dave Foster is the 1031 specialist we use at Jake & Gino, so I would get clarity on that piece first.

Although the QCD is currently generated by the seller, we are exploring ways for our platform to generate the QCD document along with the other closing documents we already produce, ensuring the entire process meets the high standards our customers expect. 

The custom builders in the area are very competitive and are offering pretty inexpensive builds vs comps.If the lot was purchased recently for 20K and the turn-key cost to build is $200K, after I close on the house (bank said appraised value would be 220K), would a new buyer have problems with it getting appraised over $220K even with other comps selling for 300K+?

Also, as I and @Dave Foster told you on that other thread, there is no honest creativity with 1031 if you plan to 1031 into a residence where you will live immediately.

The extra interest is small and increases our APR by about 1%.To do this, our lending attorney provided custom clauses in our loan documents, including a deferred payment section, an interest-on-interest clause, a balloon payment disclosure, and a few others.

We have a high quality of customers after we cycle through poor payers. 

You can customize the payout duration and amount.

I can tell you one thing, THE SITE HAS VALUE AND THE COMPANY HAS GREAT CUSTOMER SUPPORT.