Why do you even need such a chair? How much time are you spending sitting it in everyday? Maybe if you want to pivot to streaming...
Personally I prefer to spend most of my day outside and trade through my phone. Especially when futures scalping, sitting in a chair all day waiting for your perfect rules based setup is a recipe for disaster because mentally you've already committed to entering trades that day and sitting at home all day in the same chair just reinforces the idea that you're committed to trading that day... So what it leads to is entering trades that don't really fit your rules, and then you journal how you lost money because you broke your rules. After many years, I stopped waiting for trades, and instead let the trades come to me. Nowadays spend no more than 1 hour around the open at the computer and the rest of the day playing outside with my kids. I'll monitor my instruments on my phone and have custom indicators to alert me when a possible trade setup is forming. Then just enter the scalps on my phone with automated strategies for scaling in and out after the entry.