Yes the MAF is only the 2 torx.
The dash switch is no problem either.
There is a rubber bung on the bulkhead in a convenient position.
Standing in front of the engine, look down behind it, approx in line with the clutch pedal (but on the other side of course)
Take out the plug, push a screwdriver through, and you will find it comes out in just the right place for a switch to be positioned on the right of the centre consule, quite near to the headlight beam adjuster.
I experimented with where to fit it, and for me that is correct - handy - but not too obvious. Someone a few days ago said they had fitted the switch in the drivers glove-box. That would not suit me at all as I want to be able to switch from eco to power on the move, without having to stop and access the switch, in a concealed location.
I use the eco for motorways and the power setting for the twisty fun bits.
Good luck - it takes around 30 - 40 minutes to fit depending how fussy and neat you want to be. Let us know how you get on.
The most awkward bit is of course re-fitting the air filter cover.