Advice needed for "daily driver" Zenith set

[dano]

I recently picked up a Zenith console from about '69 or '70 that I would like to have as a daily use TV. I have a '67 RCA that I retired from use a couple years ago because it was in need of a tune up, and from talking to another local collector, I understand that the flybacks tend to like to overheat and replacements are near impossible to find. I wanted something that I didn't have to worry about if I used it daily.

So now I have the Zenith. I understand that the 23" tube in this set was used for sevaral more years... so the thought had crossed my mind of finding a newer chassis to install in the set. The origional chassis is tube type or tubes with a few transistors, and while I love tube sets, it might be nice to have something newer for daily use, and maybe something with a remote and A/V inputs. I'm told that the 23" crt was later phased out in favor of an inline crt, but honestly I'm not familar enough with the terminoligy to know what the difference is. Would an inline CRT/chassis fit my set? So, I guess what I'm asking is:

-Would there be any origional parts, such as the flyback, that would be rare enough on this chassis that I may wish to avoid keeping it for daily use? Anything that would make it more trouble prone?

-Would using a newer chassis be a good idea? I'm not worried as much about controls being mounted differently, just the electronics.

-If I do switch chassis, what years/models/types should I look for? Can I mix and match pieces from newer models (add a space command remote, for example)?

Finally, before I get any flames, I do intend to keep all origional parts and would only be doing this swap to preserve the origional parts and to keep the set as trouble free as possible.