What do you think of my drive line Angles?

[Arl37]

I have a 69 C10 long bed with a 350 crate and 700R4 transmission. 3.07 rear end. I just finished installin 2 1/2 dropped spindles and 4 inch dropped rear springs. I think I may have a slight vibration under hard acceleration that I didn't notice before installing the dropped rear springs. I had the front end aligned and tires balanced two days ago. To eliminate drive line as the cause I determined my two piece drive line angles as set forth below.
What do you think of them? do they look acceptable? If not why not.
Thanks

Sorry I couldnt figure out how to rotate immage