We have 4 blueberry shrubs that are located in a 4 foot strip between our driveway(concrete) and the neighbors(asphalt. These shrubs do fine, I think they benefit from the extra water that runs off the two driveways, and into the soil. I have to add agricultural sulfur to the soil, and check pH twice a year. I don't know if this practice is hard on the concrete driveway-it's 60 years old, and deteriorating at the foot, where it is exposed to road salt. Is the retaining wall you mention going to be one side of your raised bed?

Mark this subject has been talked to death over the last 5-6 weeks. Doing a search would yield tons of information or you could just check through the first 2-3 pages of threads posted on this forum looking for threads on blueberries.

In general if you are going to be planting in native soil its best to test the soils PH a year in advance of planting. Then acidify it using a pelletized soil sulfur and plant the following year while making sure the soils PH is low enough first.

Of course you need to think about drainage and a few other things but all the information you are seeking has been discussed ad nauseum several times within the last several weeks.

I'm sure there is some one who is not tired of talking blueberries. However the search function works and the threads are not many pages away even if you choose to look manually.