wheel off sets help p reg polo

hello guys and girls I've got a polo on a p reg and i am looking for a set of wheels , now to tell you the truth i havnt a clue when it comes to what will fit and what wont

the car is lowered at the front by 40ml and 60 at the rear . i do have a set of chome country wheels but they dont look right and are maybe to big 15inc . i can get the arches rolled buy mr denton thats not a prob but its finding something that rides well maybe not having to roll arches ?

so please help this old guy buy makeing things simple

thank you