ConfusionOrIllusion,
I'm going to say something you probably won't like and once again this is only my own opinion based on my own journey and learning of other people's experiences.
Firstly, NO! I don't think you will have the opportunity at this stage to visit heavenly realms.
You are trying to short cut the process and I don't think it can work like that.
I think that if you tried right now and worked on raising energy and leaving body, if you succeeded it would only last for a few seconds because fear would overtake excitement.
You are wanting re-assurance that you can call the shots and have it your way but we all have to learn.
I think the learning process is organised only its us who dis- organises by our thoughts and fears.

Please take baby steps and digest all the good information everyone here has given you.
Once you have....condition your mind to peace and pleasant thoughts....
No one here is able to give you the guarantee that your looking for.
Wishing you success.