Astrocytoma Grade II

Hi,

I was lately diagnosed with an Low Grade Astrocytoma (initially defined as Low grade glioma) following a partial seizure on the right side, the mass is big 6x5x3 and I am 35 years old. I did MRI, fMRI and PET Scan.
Analyses showed that the Speech Production area is surounded by the tumor, while the Speech Understanding area is not touched yet. The conductive area between Production and Understanding was not very clear but believed to be out of the tumor. I have the following questions, and please don't answer unless you went through the same case, or you are a professional such as neurologist or neurosurgeon:

1. What is the best treatment for this kind of tumors?
2. Is surgery feasible and safe? and if it is, what are the risks and benefits?
3. What are the consequense of the treatment on my body, mind and sharpness?
4. What is the life expectency for this kind of tumors?
5. What is the quality of life during and after the treatment?

Thank you in advance