Also in regards to your other question about the medical and assessments:
You could try and fit them both into one trip. You will have to complete the online application for whichever school you choose first and then they will give you a few dates to choose from. Which would then allow you to book your medical before it or after it.
Personally I did my medical before having an assessment, firstly because if you cant get a medical there is no point paying the money for the assessment and also it shows your commitment to your future career and is a good thing to have shown that you've done before you go for your assessment.
Obviously my opinions they can be done anyway you like.
Good Luck with your assessments!