Go for it and don't look back. You're considering it seriously enough to post on here about it, so go do it. It's not like you can't ever live back on dry land again if it doesn't work out.
Personally, I would not rent the house while living aboard. There's too many potential problems (poor tentants, late rents payments, no rent payments, broken water heaters, leaking roofs, etc. etc.) that will take up precious space in your mind while you're living aboard. Besides, I'm a Realtor and have seen situation like this end very badly. Playing long-distance landlord is not fun or easy. Management companies are expensive. Sell the house, then move aboard.
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