Smart or comfortable? I can't seem to find anything in wardrobe that fits both.

Got an interview tomorrow for 'trainee assistant manager' at Cash Converters and i'm fucked if i know what to wear.

I've narrowed it down to smart but ill fitting suit that looks like i've borrowed it off my dad that i feel ridiculous wearing

or

comfortable in a red shirt /black tie kraftwerk style combo, problem here is that the shirt is quite well fitted so if i wear the trousers from the suit i look bottom heavy so i'd have to wear black jeans

Next week its 'office assistant' in a solicitors so i'm thinking suit no doubt for that but tomorrows got me all confused. I promise when i get a job my posts will become much more interesting.