What's wrong with 17" tyres? There's plenty of muddies in that size range. Do you really need the lift? The tyres have already lifted by 1". What's wrongwith AT tyres? You sure you need muddies? They're more dangerous and noisy on tarmac. What type/brand At's are they? A lift means added problems with drive shafts etc.
Do you realise that lifting 2" doesn't really change ground clearance? The diff is still the lowest point and a lift doesn't change that, only tyres will do that! Your girlfriend won't like climbing up into a lifted hilux.
You still want muddies and 2" lift?
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe, stock SR5 rims with Toyo Open Country AT2 265/65R/17's