if you want a model with specific features, you will need to wait while they build you one, exactly like that. That is the bulk of the delay. Unfortunately, like all the retailers, the part you can change (typically at great expense) is the last few miles of the delivery process.
Only if you can "settle" for something already closer to the Retail end of the Apple pipeline can get any real impact from the quick-delivery options, but they save you a day at MOST.
Also consider MAJOR retailers like Best Buy, BH Photo, Adorama, and Amazon, and others who may have already ordered the model you want and have it available quickly 'on THEIR shelves'. Remember that as Retailers, their terms are slightly different from Apple's, such as they may not offer 14-day full-value returns.