Sure. First off, you can have more than one Guardian Daemon/Daemoness, but it wouldn't happen often, and most likely for a very good reason, I do not see that reason present.
You were also looking to Lord Amdusias for the wrong reason. It's your job firstly to secure your life, if you happen to need help then ask, but Father Satan, and the other Gods/Goddesses, including Lord Amdusias, are not here to wait on you hand and foot. They'll help you, but you have to be willing to do something in return, usually in the terms of service. You're reason was a little selfish. As for the dreams, yes, Daemons/Daemonesses will send you dreams to lead you somewhere you'll want to disregard the dreams of when you were a christian because those are enemy influenced entirely, but you may want to suspend your conclusion there for now. Keeping an open mind is the best thing when looking for your Guardian Daemon/Daemoness or with anything in general. You could try a Ritual with a Pendulum to see if Lord Beelzebub is your Guardian Daemon. Don't get discouraged if he isn't. I still do not have a permanent Guardian Daemon, and I have been Dedicated for a year now.
You're trying to make connections based on what is happening in your life, and what aspects they Our Gods/Goddesses have themselves. It's better to be patient and get to know Satan first. Keep an eye out for signs if Lord Beelzubub happens to be your Guardian but don't conclude so quickly. It may be a sign of something else entirely.
As for the Gods/Goddesses rewarding you for doing reverse torah rituals it would most likely not come in that form, It would be something a lot smaller.