Thats what I would want 5S, maybe a 2s and a 3s pack till someone makes a suitable 5s pack. But for $50 4s and go up 2-3 teeth why not. Plus with 5S the 4500's would give better runtime than 4S lipo 5000. I been watching them for a while and when the tech gets there size and weight wise they will probably take over. Unless lipo gets better tech too. I just looked and the 3s packs wont fit scrap that thought.