rarely do you see people who are happy with what they have the very first time they buy something. not trying to say you wont find happiness with your gear but from the little experience i have and from the reading i have done, there will always be a juicier piece of meat. up until the time where you have all the best meats. and then you just start wanting more.
get what you want now. enjoy it. if you are happy with it, excellent. if not, think about upgrading when the time comes.