Is this method good when approaching roundabouts...

Hi,

Let's say I'm driving in 3rd gear, and I'm approaching a roundabout with lots of traffic, I need to come to a full stop. Therefore I press clutch and put it 1st gear directly from 3rd (after I'm at the appropriate slow speed). Then slowly release clutch and press brakes. So I'm at full stop in first gear pressing no gas/brake or clutch.

Then I just take of (since already in first gear) by pressing gas.

Is this right?

I know I can also from 3rd put it to neutral then come to a full stop, put it 1st and take off but I read this isn't safest method.
If I plan to not come to a full stop but just reduce speed I guess I can put it 2nd after reducing and coming at the correct speed then continue...

Thanks