build to rent is great. they are an intermediary that help investors contract direct with turn key new build. they are pretty sophisticated we have sold a house so far and we are looking to sell other multifamily with them. there is a vetting process and as an intermediary they don't control construction they help vet builders and establish relationships. they have a big team. the other builder I've never heard of but unless you can see your house I wouldn't touch it. rent to retirement has a strict policy of 90 days until certificate of occupancy until they will send a deal out they are good at what they do and I'd recommend them. they have options all over the country and established relationships.

Seller was not willing to extend contract or accept creative financing options.

It’s inexpensive to provide but can make a big impact.Comfortable Bedding: Investing in high-quality mattresses, pillows, and linens improves the guest experience and leads to better reviews, which can boost occupancy rates.Smart TV or Streaming Services: Offering Netflix, Hulu, or similar services is a low-cost way to enhance guest entertainment and stay competitive.Fully Stocked Kitchen: A well-equipped kitchen with basic appliances and utensils appeals to families and long-term guests, saving them money on dining out.Dedicated Workspace: If your property caters to remote workers, adding a small desk and ergonomic chair can set your listing apart.Outdoor Spaces: If your property allows, an outdoor seating area, fire pit, or hot tub can significantly increase your nightly rate and attract more bookings.Energy-Efficient Features: Guests appreciate eco-friendly options like LED lighting, smart thermostats, or solar panels, especially in eco-conscious markets.Keyless Entry: A smart lock is a relatively small investment but offers convenience and security, which many guests value.If you’re deciding on amenities to add, it’s always a good idea to research your local market.

I would strongly advice consulting with an attorney or financial planner to discuss your options.

Would it be a good idea to get a real estate license and work in real estate or are there other options to get in Missouri to get real estate experience without a license? 

Not sure what market you are in, but I would talk to some lenders about FHA options on a 2-4 unit property.

When I have some free time, I'll research other options that won't cost a fortune for the small guy.

The only other option I see is a short sale, if you don't need to purchase for a few years and don't mind a temporary credit hit to save the $60k.  

What ever the Contractor proposes you should not take as the only option.

While you work on that, you could also explore creative financing options like DSCR loans or partnerships to fast-track your first STR.