Customized 8 x 10 screened gazebo is always an advantage point to have since you can produce it in virtually any style and model that you want. Additionally you may also include different characteristics that you need which may not be available in a premade one. But understand that having a customized one also means you might need to prepare more on the budget specially when you want to produce a specific design. Needless to say, you still ready to regulate everything so that it would not review budget therefore you'll need to talk about the choice after again.
Do not forget that you could also need to think about your budget when you wish to install 8 x 10 screened gazebo. Although it is not extremely expensive but different design and type also is sold with variety of pricing options. Hence you'll need to decide on one that's however within your budget but nonetheless function well as you are interested to be. Obviously having a tailor made you might be another choice as you are able to try to have.