The MOD1 comes in many depths depending on circumstances. 30m/100ft and 40m/130ft air diluent and 45m/150ft helitrox.Once I finish the an/dp and helitrox my ccr class in ccr helitrox. Same depth and helium oxygen as OC just on the breather instead
There’s a big difference in skills required between those levels. Often people will get the shallower certification if their demonstrated skills aren’t sufficiently up to scratch. The helitrox level requires the diver to be able to hold decompression stops which is difficult when you’re starting out with CCR.
In reality, diving beyond 40m/130ft require decompression which needs two bailout cylinders and sorted buoyancy skills. That is earned through experience, a novice CCR diver will struggle.
TBH you’re better off with going for the air diluent, going away and practicing through extensive diving, then going back for an upgrade. Or just work hard at practicing and getting the 75 or more hours in and doing MOD2 at 60m/200ft or the deeper variant at 70m/230ft.