Twice last fall we had chick disasters, with only one survivor. We found chicks available immediately at a feed store the first time, and at a hatchery the second time, both within (fairly) reasonable driving distances, and went for six chicks each time to keep our loner company. Definitely do it! In spring you'll have many choices, pick chicks about the same age, hopefully some you might want anyway, and compatible with your survivor.
All the best here, and welcome!
Mary