building or upgrading walls

building or upgrading walls. would it be possible when we are selecting an entire row of walls that we could see the total cost to upgrade that row and if we have the available funds we could choose to upgrade them. if there is more than one type of wall in the selection it will only upgrade the lowest or have the ability to select x number of walls that are of the same type or level and click the upgrade and it will ask us to confirm that we want to spend x gold for the walls and if we don't have the funds it would either spend what we have after we have confirmed that's what we want to do or it wouldn't upgrade any of it due to lack of funds. I hope this makes sense