yes its a VAG 1.8 20valve turbo.
spacers, well the rear track isnt too wide on the
ibiza and the handling improves with spacers.
get hubcentric ones, not the cheap ones as these ensure the bolts are not overstressed. take a look at the rear wheels you will see they could do with moving out by 10mm or so.
the car already has an intercooler, its just not that fantastic as its pretty small.
you dont 'need' it to get 200 bhp (ish).
if you did want one you will need to be spending something like £600 for specially made kit, or if you are handy you can do it cheaper with a laguna intercooler. again do a search plenty on it here.
my advice would be get the remap and spacers. then decide on anything else.
you will most likely be more than happy.