Question about LLCs for out of state investor

[Devon Greenfield]

We currently live in Washington state but are moving back to our home state of South Dakota this summer. We have put in an offer on an 8-plex in Iowa. We will be using a HELOC to finance 100% of the purchase in the name of speed. We will then refinance with a commercial loan under and LLC. We currently have not set up an LLC so my question is should we create one specifically for the property in Iowa or in South Dakota. Iowa's filing fees are cheaper.