Assuming you have a towing vehicle that can safely tow the Outback Loft and all the toys, there are several online sources with different points of view and a decent list of items to look for in a used travel trailer.
Below are a few links with good check lists but it comes down to:
Price: Pay for what you get, get what you pay for. Know what is/not included in the price. Know its utility value v emotional value. Negotiate. Be willing to walk away.
Condition: Know what's working and what is not. Look for damage (Structural/Mechanical/Fire/Water/Electrical/Electronics/Plumbing/Corrosion, etc.)
Location: The closest deal is not always the best deal. When it makes economic sense, travel to buy.
Warranty/Guarantees: Buying from an individual? Consider paying for a dealer/professional inspection before buying. Buying from a dealer? Find out if they stand behind their product and what warranty and guarantees they offer/promise in written as part of the deal.
Internet Search: "buying a used travel trailer what to look for"
Hope it helps! Safe travels & happy camping!