Basically similar to above.
4500EZ with no XSP is going to be summary voltage driven and you're going to be driven to summary events. Less than ideal by a long shot, so that means you'll need an XSP and then drag the bus in addition to power to the cell location. May or may not be an issue based on your total bus length (>4000')
The downside of the 4500 is the additional hardware and power concerns and frankly, once you add up the additional hardware needed, a 4530EX is significantly cheaper than a comparable 4500 based installation. The only change is the number of conductors and AWG needed to support the 4530 practically.
There are other units on the market, but everything but the 4500 is going to be dialer capture (some caveats) and you'll need to plan on connecting a supervisory zone at the panel no matter which unit you use. If you use the 4500, really you're going to need to drive a relay to trip the zone because you need to keep the supervision failure event latched on the host panel.