Any reach settings is undetectable on Hypixel. It's already confirmed that moderators themselves don't have the tool to see if the player is reaching within 4.2 blocks. If you get too many reports, they may spectate you, so I advice you to go over 3.3 - 3.6. Those are my current reach settings I use on my main. If I face a cheater, I toggle it up 4.2 - 6.0. I've never gotten banned on my main either. For velocity though, Hypixel can definitely detect that. Don't go any lower than 90% Horizontal, and don't touch vertical. However, I'm in some certain situations where I face a very blatant cheater with low velocity, so I toggle my horizontal to 60% in my case. This may be risky, but literally all the staffs are inactive. Keep this in mind, don't think highly in Hypixel because their staffs are dogshit and so is their watchdog. You don't gotta worry what settings you should use, as long as you keep a low profile and don't fuck too much with the blatant tab.