Just out of curiosity what company spacers are you planning on running? Anything more than 5mm or 8mm I would run with extended lugs built into the spacers. For 20mm I would recommend Ichiba V2 spacers. You just slide the spacers over your OEM lugs and new extended lugs are pressed into the spacer itself. You can find these on ebay. Below is a pic of what I am talking about.
I'd probably buy H&R instead of Chinese made spacers.. You are putting yourself at by using these. You might as well reduce some of it by using higher quality brand