I’m very interested getting together informally on the 13th / 14th. I do work graveyard on the night of the 13th. It doesn’t matter what’s going on in this little get together. I want to be there. I’d just need a ride.
As for a structure of a parts trade, size for size works fine for me, unless the parts involved aren’t the basic colors (white, black, blue, red, yellow, and the bleys). Then 2 for 1 is fair. Minifigs are much different, and I don’t consider minifigs to be individual “parts” per se.
I have all my parts sorted by color and size into polybags, so it should be easy to look through the little assortments of stuff I have left over from my MOCs.
Not all of us have big parts collections, so trade events like this are really important for those who don’t have multiple shelves’ worth of parts.