My humble advice to you is that you go for your dream animal when the right opportunity presents itself. And the #1 reason to me is that you might never get a chance again. Two friends of mine had dream hunts that they kept putting off for a better time. Sadly they both never got the opportunity because of their untimely deaths. The first to die had the dream to go to the Yukon with his brother to hunt moose. In a bizarre twist of fate, he died when he was in a collision with a moose while driving home one night. My other friend and I were co-workers and would always talk about our life-long dreams to hunt Africa. We promised each other that if either of us won the lottery, we would take the other guy on a safari. Then he drowned while on vacation with his wife in Cuba. That was the kick in the pants that needed to quit putting off my dream on the possibility that I might gain a little more financial security. As a small dedication to him, I taped a photo of him on my rifle and brought him, in a way, to Africa with me. You can see that in the pics that are in my hunt report.
Since I was 14 years old I have dreamed of Kudu. Every damn day! When I decided to go to Namibia in 2014 at the age of 45, Kudu was the one animal that I would be upset if it never came together. I wanted one so bad I could taste it. We saw lots of kudu cows, but only two bulls in 10 days and my PH was unable to judge the horns before they disappeared. So I went home without my dream animal. And I still dream of Kudu every day....only far worse than before! I am hopeful to be able to go to South Africa in 2018 and at the very top of my Want List will be a Kudu. If the Hunting Gods smile on me and gift me with a Kudu I know that my emotions will be all across the spectrum, from tears, to pure joy to a little remorse. If I am fortunate enough to return for a 3rd time, I won't want to repeat on any of the species I've taken previously, except Kudu. And they will be on the top of my list again.
If you get the opportunity, and everything feels right, take your giraffe. Go through the spectrum of emotions. You'll still have dreams...they never go away!