The first application window for AECS was between April and june this year, these applications are I think still being processed. I think there is another window in the new year, although perhaps applications for that can go in now?
Be aware that it is a competitive scheme - just because you are eligible for the options you mentioned doesn't mean you'll be accepted. The applications are all scored against particular criteria, and you'd probably need to apply for more than just these two options to have any chance of a high enough score to be accepted. It is worth trying to get your head round all the application information, complex though this is, or else use an agent.