Wow. Looks like you could register that site and get it recorded. That's a great deal of artefacts and I'm thinking it could really date the time for the village, culture, as well as allow people to look for post molds, other features and really break it down for the details.
Those are unique finds and last site that I was asked to look at, the individual had pulled up a number of artefacts such as these...points, grinders, gorgets, you name it...they found post molds and eventually burials which allowed them to identify pottery with burials, pipes, etc. Tons of features and it really changed the map for what they knew about cultures in that area which led to some big updates to the Ohio River Valley area.
You're definitely onto something. I'd get someone involved to help identify more of those individual items. One note: It's a private site that you're given permission. These are your artefacts that you are locating. Consult someone for some assistance in identifying and allow them to help identify those things that I mentioned before such as culture, time, etc. they can even give you pointers on further searching, non-surface finds, while not damaging anything in the process. If someone wants to sit down and talk with you about it...show them and go over the points, etc. Allow pics if they choose but DO NOT allow them to take them for review. You'll never get them back and as being experienced...I've watched universities and even state museums borrow items for further review and the people never get them back.
I work with a group and we would identify, photograph, measure various things, and we would even help with site identification, advice on digs, and references, consults...and we're all volunteers for the most part but we never ask for the items. If someone begins asking...they're definitely a pro archaeologist and they love to take credit for items that are not their finds. haha. My group are all pros and experienced and educated (I consider myself a arch associate or research assistant but not arch). We still have respect and integrity. But if you find good people, they'll help without taking anything.
Another note: I wouldn't consult a NA contact at first. Just my opinion.