If you don't do it now, when? You don't want to leave this world at some point in the future asking why didn't I do this, especially if it's been a dream for so long.
I built my first Cobra almost 10 years ago and now own my second one. In all that time time I have never looked back nor regretted jumping in and owning a Cobra. It's been damn difficult to keep a smile off my face in those 10 years.
My advice, go for it!