Posted: 09/11/2013 at 08:49
I think you have made a great plan and I'm sure you're garden is going to look great. It's hard to imagine how it will all look, but that is part of the fun.
When your plants arrive, you can position them around the garden while still in their pots and see how it looks, and when you think you have the look that you are after, plant away.
Just make sure you know the finale potential height of each plant, so you can decide where in the boarder it should sit (front or towards the back); remember some plants are fast/slow growing, so your design will take a few years to look how you intended; and even if you have planted everything and 6 to 12 months later you think.."that's not working out there.." you can dig up plants and move them (maybe the next year they may not flower as well for exampe, but they will recover).
Good luck, but I love you plan and I think you are off to a great start.