@sam324robinette - Welcome to Connect. I'm sorry to hear about your dad but glad that you joined us a this difficult time. I'm a lung cancer survivor of 21 years, with four lung cancers. There are a lot of different types of lung cancer at various stages of growth. Lung Cancer no longer means a certain death. In the past several years there have been many "breakthroughs".
Before you discuss and alternative methods please check with your father's doctor and make sure that it's compatible with any treatments or medicines that he is offered. The biopsy will help stage his cancer, cell type and confirm it.
Does your dad know that you are speaking for him? He's lucky to have your love and support. Perhaps he'd like to "talk" with us too- there is a lot of support on this group. I'd also want to suggest that you go with your dad, if he let's you, to his doctor appointments so you are in the loop.
How is your dad feeling? Is he comfortable, in pain?

@sam324robinette- I'm just checking in to see if your dad has had a biopsy yet. How are you doing?