It looks like all Samsung tv's have a minimum of one analog output. However it is not clear if they are RCA or 3.5mm connections.
Analog allows the most universal connection for receivers.
You haven't given feedback on getting receiver via Craigslist and AA monitors. Dennis builds to order, so best to check lead time. I think you are fine, but if you have hesitation, let us know so we can reassure you, or look for another solution.
You can also go pro audio speakers, but I don't know of any in you budget that are full range. I installed a sub in the setup I did. It was for a bedroom and often the listening position (sitting at the foot of bed) was within 3' of speakers, which is too close to use the kind of speaker that can fill a living room. (The tweeter and woofer are too far apart to be so close. The speaker I used had a smaller woofer.)