H&R Spacer Information

Bumping the thread again. I am a bit confused and want some clear paths. Here is my 2012 Clio

ImageUploadedByTapatalk1410128402.231660.jpg

I am planning to fit H&R lowering springs and spacers, with these wheels, are the 20mm spacers the best to go for? The confusion is do I need to get new longer bolts?

From German eBay, which one is the best to choose, some comes with black extended bolts and with lock nuts, but to be honest I don't know which one to get.
 
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