Welcome aboard. Wish I could help you, but I think most of us on here are buyers also. Personally, with what I know and believe about BTSX, I wouldn't sell mine for 100x the current price. It's kind of you to be concerned about the market effect of a large purchase, but with the current price escalation, every moment you wait is costing you money. I would suggest buying what you can now and then continuing to ask around for a large seller or two.