Risky,
There are different ways to descend, depends what you want to achieve.
If you want to come back to 210kts with speedbrake, you'll descend at a very poor rate. You will turn base leg at the "south coast" eventually.
With high speed you'll get a serious rate at a shorter distance, but, yes you will need room to slow down as well. Base leg can be utilised!!!
I chose the latter.