Here's my two cents worth...
First of all, with scrappy quilts, it's really hard to not get "same" next to each other (as you can tell if you look at my avatar). If you CAN manage that, it would keep the visual "flow" the same throughout.
Secondly, the white, as others have said, is just a little too bold with the rest of the prints. However, unlike many others recommending tan/beige/ecru, I would say to go with a very light to medium gray. Why? you may ask... well, there are several beige/tan types of colors in your blocks, and if you get too close to that same value, you will "lose" the overall pattern, just like the pattern is disrupted by having "same" blocks together. Plus the gray would continue to give this quilt a more masculine voice.
With all that said, remember - there are no quilt police nor color police. If it's meant as a gift for someone (like hubby perhaps?) just ask him. If he likes it like it is, then just leave it like this. When it comes to color, my hubby doesn't see the same thing I do - often he will love what I hate and vice-versa.
As quilters, we are often so critical of our work that we fail to see the beauty that is obvious to others.
Good luck choosing, and please post pics when you're finished!