Join the club. Bought a low viz way back (fell in love with it the moment I saw it) and then completely left the scene until last month. Now I am trying to complete (start and finish?) my 1/48 collection and it is extremely painful to my wallet, not to mention having to go to a whole bunch of sources worldwide to find everything in the condition I want.
I don't think going 1/60 makes things much easier; most of them aren't available anymore at retail and the secondary market prices are just as jacked up, if not more so, than those for 1/48. Plus, and I know it's just opinion, but the 1/60s (other than Zero) can't hold a candle to the gravitas of the 1/48.
btw, I have found anymoon,com as well as this site to be invaluable as I was able to get (mostly) back up to speed in days.
Finally, Yamato collecting=bend over. I hope you have a good amount of (truly) disposable income.