No no, just one time per iso, but make sure everything is verified (green).
In that case you might as well leave it up to the store. I was under the impression you wanted to go hands-on and do it yourself.
Might as well tell them to hook you up with a dual or triple nand (ability to have 2-3 consoles in one) where you can get some homebrew or sweet emulators running, ahhh I wish I had some extra loot right now I'd do that myself!!!
The wasabi is practically the same thing, differs in terms of installation but if it's those menu's you like I think the wasabi team probably has their own style in the works, but hey It's ALL up to you. We can only give you advice. :P