Hmm i can understand how dale is feeling. I was in his shoes too. Had around the same amount of hair and recession at the sides. I think the photos don't really show it but the hair at the top should be too thin for him to style it the way he wants.
Dale, my advice for you is to think about what you want. With your current hair, you are able to achieve maybe 60-70% of your idea style with toppik/ dermmatch and some effort into styling. But if you are ready for the effort needed into maintaining a hairpiece then you should go for it.
The best is to order the hairpiece first and leave it ready for you start wearing at the stage where you feel that you are ready to wear.
I used toppik over the last 2-3years but I was rarely really happy with how my hair looked, mainly cos toppik can't do much for reccession at the temples and a higher hairline.
Now that I just started wearing, I do feel more at ease nowadays, as I don't have to worry about whether I will lose more of my hair.
Hope this helps and feel free to ask if you have any questions.