You need to stick to 4.5" x 10 alloys or you will need arches , are you staying with drum brakes or are you planning to go to discs
the wheels you chose will need the 'offset' to be suitable for either application , ie the 'disc' setup has the hub center further out and therefore your wheels will need to have an offset to suit this whereas the drum setup has the wheel center further in and if you use the incorrect wheels they will rub on your shocks , I will have a look here and check if we have any in stock , We can do new genuine Minilites with Falken 165x70x10 tyres for about € 550.00 inc nuts / caps etc , you can find membership details on the front page .
G