Now that you are making a list. It's time to get realistic with that list. Or at least get real. Unless you have eight figures in your bank account replace "'59 Les Paul" with just plain old "Les Paul". Forget the Dumble Amp and maybe shoot for a Two Rock.
Your list should be in no particular order, allowing for a free flowing, stream of consciousness that will allow you to be flexible with your gear acquisition. Priorities will change often. Sometimes daily. So don't be bound by the position of where things are, let need or opportunity dictate your next purchase.
For example if you only have one amp and it's starting to die, move your amp choices to the top of the list. The list should be a living, fluid document. If you have an audition with a funk band and you don't have that wah pedal that's number 15 on your list, move it to number one. If at the bottom of your list is a mandolin and you see a nice Gibson at a yard sale for $100, need I say more?
Needs vs. wants. Know the difference here. I have had items stay on the top of the lists so long that they were no longer desired or needed. As Garth Brooks sang "Thank God for unanswered prayers."
Here are some items from wish lists past, with commentary...
G&L S-500 - got it and sold it, too noisy
Lexicon MPX-1 - didn't get it right away, then the MPX G2 came out, got it at artist pricing (50% off), loved it and still use it.
Mesa Boogie 2:90 - never got it and kind of glad too
TC Electronics M2000 - never got it, didn't really need it once I got the Lexicon
Egnator Preamp - Never got it
Dobro - got a 1929 National Duolian that I use all the time
Taylor or Guild 12-string - got a Taylor 655 for a great price
Danelectro Baritone - Got it
Neumann KM 184 - still on my list
Gretsch Country Gentleman or similar - still on my list
ADAT Player - didn't get and glad
This is just a small sampling of prior lists, some even included smaller, more attainable items like capos, strings, recordable CD's, etc. But you can see in my ability to predict through wishing was batting 50/50. But that's OK, because most the stuff I didn't get I didn't need.