I'm trying it now but I'm just at day 10 so that's a bit early to tell :d But I'm using Plagron nutrients too so I'm not gonna know if it was RQS pellet or more Plagron nut.
I think there is absolutely no problem with autoflowering strain, I'll make a 4weeks veg than go on flowering so that's quite the same time as an autofowering cycle.
But to be honest, I don't think I'll buy it (I receive it from RQS autumn contest package), liquid nut to add to your water is easier to work with.
U got my opinion mate ! 😁