Everyone is going to say the same thing, just buy a 7mgte.
Otherwise you will need a whole new engine management system, which will be at least $1k + tuning
Then the cost of the supercharger and plumbing are you going to run an intercooler?
And is all the work going to be performed by yourself or will you be adding a labour component to blow the figure out of the water.
Sit down write up the figures and be realistic, not wanting to dampen your enthusiasm towards it, just dont get halfway through and realise that its going to cost twice as much and be 4 times harder than swapping in a 7mgte.