just tell the wife its not a safe bike, you need something that will haul ass so you can excape certin death hhahahaha.. she will say well we better get you a bigger bike than..
the gz is a great little bike, if you are already wishing you had something bigger you probably always gonna want something bigger. words of winsom try to appreciate what you have while you have it. be great full you have a bike and when it comes time to upgrade it wil be worth the wait, you dont want to get something really nice and drop it after 2 weeks
even tho i had this huge urge to get a bigger bike right off the bat i stuck with my gz for a while till i found a killer deal on a used bike. some times i would think i regretted the little gz but when i actually got out on the bike i had fun and forgot about it. after my ride i would start to think i want something bigger, cooler and faster. just take it for what it is, ride that thing and have fun for now..
remember its your first bike. and usually the first one (what ever it may be) is your practice toy to see if you are any good at it or enjoy it enough that you dont loose interest in it.