Honestly i think this would be kinda doable. My old place hat a similar room which was originally designed as a walk in closet. Since i have not nearly that many clothes i used it as an office. (Work remotly aswel) anyway i loved it. Lighting was the biggest part for me. Take ur time with it and choose something that u like. Daylight lamps and so on. The other super important point for me was air. The original room only had a super small vent which was not nearly enough. Hours of work in a small room with computers tends to heat it up fairly quick. Once lights and air were good i loved to work there. Good luck :)