Color is all for naught without a color-calibrated design flow. And then we show them to each other on all kinds of crazy uncalibrated devices.
Don't sweat the color cast of lenses unless you are going to print your photos. It should be easy enough with a gray card and some time to create profiles of your lenses you can use for correction later if desired.
Example: Color casts of example photos look completely different on my HP 30" IPS monitor, than my TN display 19" satellite monitor on the same box. That is just the nature of the beast. Plus my 30" monitor is only calibrated for one or two brightness levels, not all. I have it turned way down or I would get a sun tan.
I lust after FF performance for long exposures and landscapes, but I just cannot justify spending that kind of luxury scratch when my wife and I can support/feed several children in India for a year. Yes, I started doing that and have been guilted out of my toy money. It is a pretty cool thing to do though, and has given me something that is very fun to look forward to when letters come in the mail.