Alot of those look to be in pretty good shape actually, just do a salt and alcohol treatment, unless the cake is more than a dime thick, don't bother reaming. Even then some good cake can make for great smoking. Restoring pipes really isn't that hard, you could probably even just get some stem bits to cover the ends of those cracked ones. I'd suggest getting a castleford reamer, they look like the most efficient reamers. http://www.amazon.com/Castleford-Multi-Fit-Tobacco-Pipe-Reamer/dp/B002WR1NIM