A swap at home is always a good experience
Yeah true D17 is good for turbo charging, as for aftermarket support, yeah even most of the parts I got for mine are originally for the D17 including the K-pro.
A friend has a high compression D17 setup here, the car pulls brilliantly and has done wonders at the Autocross.
Yeah if it's original paint then all you will need is some detailing and your clear coat will be restored, will look good as new 