HEY WELCOME BACK KARIN!!!
As I see this deck, it's going to be raped with the triple MST and heavy storm builds nowadays. I know you use a starlight road, but it's not enough. Therefore I suggest taking out the burden of the mighty, Call of the haunteds, dimensional prisons and the scrap iron scarecrows.
Adding a monster reborn, compulsory evacuation device, 1 more starlight road and Charge of the light brigade will help you with stability.
To be honest I don't really think it's a stun deck, but more a deck focused on utopia ray.