Growing fruit is great, lots of return for very little work :)
Others may well add different views, but as I understood it the Gooseberry and Redcurrent don't need to have as much sunlight as the blackcurrent. Even if you put them somewhere and change your mind later, you can always take cuttings next autumn and start off a whole load of new plants.
Worth checking up about prunning if you haven't done this already. Blackcurrent fruit most on the wood which grew the season before, so you are always cutting about a third of the bush right back to ground level to encourage long new shoots to grow up from low down. Redcurrent and Gooseberry bushes build up a long term shape on a permanant central stem, so that there are maybe five branches fanning upwards and away from a central stem (best pictured as a sort of big wine glass shape).
I reckon you will need to make sure they are well watered in their first season too, because thats the time they can suffer from haveing a limited root range to collect water in.