DIY toe correction after lowering?

[Fishtail]

Stock 2012 GT with OEM Boss wheels. I'm going back to the shorter 255/40R19 front tires soon so I'll then need to lower the front suspension 1" - 1.5" because that tire size looks too short on a stock-height GT. If I understand correctly, I should expect the tires to toe out slightly(?). If you've lowered your GT a similar amount and taken it into an alignment shop, did they tell you toe was out of spec?...or maybe the dual use street/track guys can give me a sense of how many (fractions of) tie rod turns per side of toe correction would be needed in order to compensate for this amount of lowering? Thanks