i take it that the weight is transferred through the two 'hooks' on the back? making this only adaptable to solid lintels as opposed to plasterboard (except where said board has a piece of studding behind)?
We used SMA Gold too. It's a right pain in the arse counting out those scoops.
I just use SMA for build up and nutrition post training. Tastes like shit but mix it with some bitter instead of water and add a raw egg and all is well
How much of a beast are you? Incut are easier, sloping are harder. You can always start off with (slightly) incut then get busy with the sandpaper at a later date.