HO Blue Line Craftsman Kit: Streamlined Mail Baggage Car wOB

From an estate, a very nice HO scale craftsman kit by Blue Line that builds into a streamlined mail baggage car. As with many craftsman kits, the kit comes without trucks or couplers. It has a very detailed instruction sheet (see photos).
I give discounts for combined shipments. However, I like to ship promptly, so if you win items early in the week and want to wait and bid on items closing later, please let me know so that I can hold on to the earlier items and thus preserve the option of combined shipping savings.