Hi, and welcome to the forum. Sorry you're here, but you'll get some great support.
However, you haven't really given enough information about your situation for people to help you much yet.
I suspect "Grade 7 some aggressive cells" means you are 3+4?
Do you know your biopsy results in terms of cores affected and volume of cancer cells, location, T?N?M?, PSA, bone scan (might not have had that yet), etc.
It's helpful to put this detail into your bio in your profile, and keep it updated, so people here can make more targeted suggestions based on your own situation - click on my avatar to see an example. Everyone is different, and even for identical diagnosis, people will have different preferences on treatment.
In some cases, 3+4 patients are offered Active Surviellance (AS), i.e. do nothing but watch until it gets worse before further treatment, although that's unusual. We would need more of the details above before commenting. One thing about PCa is that it moves slowly, so you have plenty of time to decide what treatments you want, based on your own situation and preferences.