Decisions are not easy when family is involved.
I'm not sure of what you are looking for suggestions on (ex: should you sell with them there, should you evict them, how do you sell when you live in another state etc.).
First and foremost i suggest you work with a full-time Realtor. Among many other things, you will want someone that can service your listing above and beyond the typical listing. They should be able to drive by weekly to check on the home; have the resources to complete any maintenance, clearing, securing of the property as necessary; provide you with weekly status reports (including marketing efforts and results, market updates, showing feedback, etc.). It seems somewhat basic but you'd be surprised at the number of Realtors that say 'sure i can do that' but then don't.
There are pros and cons to selling with 'renters' occupying the property and with selling a vacant home. You'll have to consider the family relationship in the decision to have them move first, or to have them stay while the home is marketed.
Have you thought about possibly finding another renter? I'm sure you've gone thru the numbers but with rental rates so much higher than home ownership in this area it may make sense to find another renter.
I hope that helps.
I have worked with many sellers in your exact position and I would be happy to answer any additional questions you may have, hash out pros and cons, run through the numbers (including a market analysis if you like).
Please don't hesitate to contact me