I have seen it along with some others but it is hard to find a good guide for migrating from local environment to elastic beanstalk and how to mitigate the quirks.
Probably not. You would have to setup individually but forge does provision Load Balancers and then you can connect other servers provisioned by forge to it. However, Forge is really just setup to provision servers with only a few admin type features. Everything else, like server size changes, you have to tell Forge manually after the original provision.