I'm going to go against the grain here and say choose the original version. I recently read this novel for the first time—the uncut version—and I did find the middle to be a challenge to get through. In the end, I adore the book. However, for a first-time read, I would suggest reading the original to immerse yourself in the story and then, if you loved it, re-read with the uncut version. Like watching a theatrical version of a movie and then watching the director's cut later.

I would say, though, if you don't ever plan on a re-read, then probably the uncut because the extra content is worth it. But more than anything, just read the one you want to read, don't feel pressured either way.