There is no projector that is 'suited' for 480i content, it's as simple as that. Easily the biggest beneficiary of 1080p content has been the front projection world, and it is also the category that can and will benefit from UHD content as well.
The old 'garbage-in, garbage-out' scenario applies here, and at 100" diagonal, you just need to be aware of what you should expect.
That said, I would be looking at a BD player with excellent upconversion, or a projector which has great upconversion, or a product in between, like from DVDO, which is designed to take analog/composite video sources and make the most of them with a HDMI/1080p output connection.
The concept of the CRT projector is nice, and there are some great CRT projectors out there, but the time and effort necessary for CRT, along with all the other shortcomings of CRT projectors would not lead me to recommend that as a choice.
Instead, an entry level 1080p projector will serve you very well, and if you want a bump in quality from that, then a DVDO processor may be perfect to add on.
If I were just looking for that basic level pairing of a digital projector with 480i/p content, then I might consider something like the InFocus SP4805 which was regarded as one of the best models out there for that type of content.