Which of these titles would you anticipate being available at similar pricing down the road some…

You know that the Community Pricing bids will NEVER be that low again (compare your CP price to the current PrePub price to see what I mean). So if they have material that you will use then they should remain on your list.

I also don't think the Babylonian and Jerusalem Talmud Collection (50 vols.)  will be this low (or anywhere near this price) ever again, or at least not for several years.

The Moody Theological Studies Collection (10 Vols.) and the Boreham Collection are both at a 33% Discount  -- I think you will be able to get close to this price later on.

I would suggest looking at the price of the single book or collection and if it is like for instance the Worship and the Hebrew Bible: Essays in Honor of John T. Willis which is on PrePub for $19.95 at a 43% discount off the Retail of $34.95 I would consider it something I could wait on and possibly pay a few dollars more for latter down the road. However, in looking at the Logos offerings for Sheffield Academic Press titles, it appears that single books are not offered at discount. You could look up the Publisher of each of the books or collections in a similar fashion and you should be able to come up with an educated guess of what the price will be down the road. 

These are just my thoughts.

One more thing. With the delay on several of the PrePub titles happening more often, I would wait till the last minute to cancel them. They may get bumped into July. I have cancelled "early order" pricing on some prepub offerings in the past and then they were delayed right after I cancelled. It could make a difference.