Yes you can, I've used 360 aura and 4.2 reach for MONTHS and never got called out for it / banned for it. I also suggest having 0 horizontal 0 vertical 100 chance velocity binded to replace the shelmet pet item (CANCELS FLOOR 7 LAVA, BE CAREFUL)
Here are my settings:
Don't use timer in any other gamemode than pit. You can use 1.05 timer permanently, anything over that will send you to limbo after some time. 1.2+ timer dogs after a few hours of actively using it (toggling it on and off)