And that's actually ok, if you honestly have the funds free now or in the near future, since there are likely to be at least SOME of those parts available at pretty good prices during the upcoming holiday sales. Coffee lake refresh parts are going to be a year old come December, and Ryzen parts have already gone through the initial "gotta have it" burst of early adopters, plus both companies are currently trying very hard to vie for these sales so there could be some very compelling offers over the November through December period if you are ready to pull the trigger on something the minute you see it.
Even though you don't necessarily NEED it now, you will eventually, so if you can an upgrade for a really good price, now, while the getting is good, it could really be worth doing since who knows WHAT prices on RAM might do later on, or other parts as well. Consider, last year at this time the price of memory was about three times what it is right now, and it will likely head back that way again before too long, so at the very least buying a nice DDR4 kit now while prices are historically low could be a VERY good idea.