Reply to 1200s + SSL user thinking of jumping to CDJs

Hey guys, I currently use a pair of 1200 mk3s w/ a DJM-400 and SSL to mix house, dubstep & dnb. I'm very accustomed to the 1200s + SSL + Dicers workflow; I have my entire library set up with cue points in SSL, for use with the dicers (most of the cue points are just at the start of the track). I play out about twice a month, and I drag all my gear with me when I do, which is a huge pain: 1200s + flight cases = 50 lbs each.

I've been considering some kind of upgrade, with a budget of about $3000. My desire to upgrade is somewhat driven by a desire for a 3rd deck when mixing, and also by having a lighter load to carry. I don't really have room for a 3rd 1200, and I'd need to buy a new SSL box (I have the SL-1).

I'm not sure what reasonable upgrade paths I have. The options that I've been believeing about are:
-upgrade mixer to DJM-900 or DB2, so I have 4 channels for future upgrade possibilities ($1500-$1700)
-switch decks to CDJ-900s, leaving the mixer upgrade for later ($2200)
-switch decks to CDJ-2000s, leaving the mixer upgrade for much later ($3200)
-stretch my budget, get a new mixer AND CDJ-900s ($3700)
-do nothing, because none of these upgrades are significant enough for the price

Basically, I'm not sure that whether of these upgrades are worth making, and I'd like some advice, especially from any people who've made the vinyl/CDJ jump recently.