Right, here's my situation, please don't judge me.
I have an iPod touch which will be around 4 years old in December and is nearly broken.
My dad brought our family an iPad to share but my brother usually ends up using it all the time, killing the battery then giving it to me which is annoying.
I have my own laptop but I've had it for a while now.
My Blackberry Curve 8520 contract runs out in July 2013.

I wanted a Nexus 7 for my birthday which is boxing day... -_-' So that I could have my own tablet that wouldn't be hogged by my brother but not as expensive as an iPad.
However, I would like an iPhone 4s as my next phone.
I feel it would be unfair to ask my parents for a Nexus7 then an iPhone later on in the year even though I've found a good contract.
My family is failry wealthy but nothing special.
Advice? What should I go for? Is it unreasonable to ask for both or is it reasonable?
Oh yeah, I forgot to say, any other phones you could recommend would be appreciated.