For DSLR concretely: Really great, but not high boost, please!

The price / performance ratio is as so often described phenomenal.
So why a review?
Will here for those who are faced with a similar question as I previously, are very specific:
Have night shooting
- 2-3 seconds exposure time
- Nikon D90 (with batteries ~ 800g)
- 70-300 VR lens (mostly self-VR on), right up to 300mm in fact extended (~ 750g)
- Total weight so beyond the 1.5 kg
- With noticeable, but not aggressive wind conditions on a bridge
made
Of course, self-timer and IR trigger.

Conclusion: shots are 85% very good, as long as you do not turn up the tripod.
The experiments with hochgekurbelten tripod, however, are very disappointing (80% camera shake). Property here but no counterweight drangehängt or try other tricks.
Since the tripod as well as already relatively high, I am very pleasantly surprised overall.
I find the bag very practical. At the bridge I pedaled: The photographic equipment strapped around his waist, the tripod cross on his back - as thought much more pleasant.
Negative otherwise maybe that Höhenkippung even gave something to detect, much more than the one and a half kilos I would then not but invite to a tilted plate.
Otherwise, it does exactly what it should. Not super light and super user-friendly, but quite fundamentally sound.
For the price just top.