the rolling radius between a 16" and a 17" with tyres is failry small you know, if one fits, the other should also!
i wouldnt worry about offsets either, anthing between ET 35-40 will be fine, only avoid 4x100 PCDs designed for Vauxhalls as theyll be around 45! apart from that all 4x100s will be between 35-40!
especially as youre only trying to check out the look!