I'm trying to set up a store for my dad before I leave for the Army in 4 months. I'm extremely computer savvy, but he isn't. I'd like the ability to customize the CSS/html, but a nice CMS for my dad who does things by WYSIWYG would be nice. He's mostly a reseller and installer of stage equipment for projectors/lights/audio.

I've got these possibilities so far:
highwire.com
shopify.com
3dcart.com
webstore.amazon.com

I'm thinking Amazon would cut into his profits too much, but let me know if I should still consider them. Also, any other websites I should consider would be appreciated!