Hi debbisholes and welcome to this forum .....
Yes, hearing the diagnosis of having an acoustic neuroma is very scary for most of us.
It is good that you have done loads of reading. Just make certain it is from reliable, medically sound websites.
As for your question about minimally invasive surgery, you need to look carefully at the track records of surgeons who do this. The biggest problem with a tiny entry point is the inability to quickly stop any bleeding/swelling that might occur when the surgeon is within the confines of your skull. Just do your homework on it.
I have had three traditional skull surgeries and the longest recovery I had for any of them was two weeks (until I was able to fully care for myself) ..... but I chose my surgeons very wisely after much research and multiple opinions. But that was just me.
Many thoughts and prayers during this decision-making process!