Yeah this 10" 800p rasp pi targeted monitor probably makes a better match with the Alpha for size and resolution. https://www.amazon.com/dp/B01J52TWD4?psc=1
Search for USB powered monitor (powered being the important part) and make sure it has HDMI input, like so: https://www.amazon.com/dp/B00PQDHAMW/
Cheaper option: https://www.amazon.com/dp/B01J52TWD4?psc=1