Where your theme comes from isn't going to concern 99.9999% of your audience and most wouldn't be able to tell the difference between and handcoded theme and on

Where your theme comes from isn't going to concern 99.9999% of your audience and most wouldn't be able to tell the difference between and handcoded theme and one bought off themeforest. It's more important to get the project out, you can always iterate over the design later.