ECS Tuning 3.0d Special Edition flares

[Cjallstar]

Hey all,
I know there have been many threads on this and I have gone through them all so I will cut to the chase. I have decided to put flares on my 2006 4.4 and want to go with the lemans/3.0d special edition style as I have no plans to add a 4.8is kit. I see that ECS offers these flares (BMW E53 X5 N62 4.4L > Exterior > Body > ES#127309 Fender Flare Retrofit Kit - 51710398336). Has anyone bought these flares from ECS and fitted them? What was your experience? Did you DIY and if so how difficult was it?

Also, I am wanting to swap out/paint the lower front bumper grilles from black to titanium to match the upper kidneys. ECS also offers these grilles pre-painted for a grand total of about $250. What do you guys think? Buy them from ECS? Paint my black ones myself? Pay to have them painted?

One last question. If and when I add the flares, I am considering adding spacers to give my OEM style 87's more poke. Would adding these spacers affect my driving experience whatsoever and would the $tealer have any issue regarding warranty if they saw I had them fitted?

Thanks in advance