Colin's answer is essentially the right one I believe, but the more immediate consideration is: what are you actually trying to show?

Most bacterial genomes are going to be several megabases at least, with most genes averaging about 1 kilobase - consequently, any attempt to visualise the entire annotation map in one go will be completely meaningless as the scales don't play nicely together.

I assume you're interested in some sub-feature, or some abstractable characteristic, so think about visualising this, rather than the genome.