Same size or correctly staggered is no problem IMO. I do it all the time and make a habit of measuring the distance between the center of the hub and the street to make sure the rolling radius matches front to rear. If there is some deviation I adjust the tire pressure accordingly.

Tools needed are a 6 inch framing straight angle and a wood board 4"x15". Mark one front or rear as a reference on the board then check against the other wheels. Best if your gas tank is half full and no load in the car.

Good luck.

__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.