Oversized wheel options

[MaverichX5E70]

Hey guys, I just picked up my new to me x5 today and I've been looking at different summer wheel options and need some advice from guys with different set ups than stock.

My x5 has the sport package and 20" wheel option. I like the 214 style wheel but they're not my favorite and I hate run flats. The truck I picked up had some curb rash on all 4 rims and 2 tires had nails in them. The dealer refinished the rims and replaced 2 of the tires. The set is essentially like new, and I will likely sell them in the spring.

I'm thinking about running a 21 or 22" wheel in a squared configuration with wheel spacers and would like to hear from guys running this set up.
How much more tread life can I expect with a squared set up vrs. staggered?

I like the simplicity of the Rohana RC22 rim however unfortunately it's not available in graphite in a 22" size.

I'm open for suggestions on a 5 star style rim. I'm looking for as light or lighter than stock rim, 20-22" size, something easy to clean and preferably graphite or perhaps gunmetal color which I think would go nicely on an Alpine white vehicle.

Thanks guys!