If the money is nothing, then do it. The SLS is probably the best daily driver super car. If you have to reach to get it I'd say skip it as a finance guy.
For me I own a supercar and a e92 and I spend all my time driving the e92 so you have to consider practicality. The SLS is probably the smartest supercar to buy though. I almost regret getting something too wild to enjoy.
Clean cars are happy cars!