My advice would be don't view the license as the 'end'; just because you've got it doesn't mean you stop learning, or that you cannot fly dual! Bit of a cliche, but regard it as a license to learn.
Forced landings you should be fairly competant at, but going somewhere busy / out of the ordinary? If not confident, don't do it - simple as that. Choose not to fly over that area where the outlanding options are so limited, don't plan to fly into bankstown, etc. Push the boundaries back gradually, and don't be shy to take someone more experienced, or an instructor for those occasions. Actually poling the aircraft around the sky should be pretty much second nature.
The answer to the second question is quite variable - it depends as much on currency as total hours. Also, in some a/c I'm totally comfortable, in others I'm very much more on edge. Some situations - such as controlled airfields might be less comfortable than others.
Flying is largely about managing workload, prioritising the important things, and being competant / comfortable about them. Aim for excellence, but recognise that some things can be fluffed safely, and others may kill you - be sure to get the important things right.