So you want to do some freshwater spearfishing eh? I don't have any experience with freshwater but a lot with salt. First is getting a mask that fits you. No leaking. Price won't matter if it leaks. Basic snorkel is fine. You don't need a purge valve. It can be nice, but just one more thing that...
Welcome, I live in Oregon too, but I'm not very experienced in hunting on land. Got lucky with a black tail a few years ago and have taken my share of rabbits and quail.
A mask that fits will be key. Don't just order online. You will need to try it on. An uncomfortable mask will make you miserable. Opaque silicone will help you see better underwater. Clear or translucent silicone can also cause ghost images on your mask lens. A dry snorkel is nice too. With or...
That's fantastic Birdman! I really miss diving. Living on the Oregon Coast isn't as welcoming for diving as Southern California was. Nothing beats a good day in the water bringing up an assortment of treats to please your palate.