I would go digital but the cost is the issue we ran into. We have just start up our security business in Fresno for one. Number two, we have 3 Kenwood TK880 mobiles and a TK380 handheld. Seeing as we have equipment on hand, i was hoping to still use these.
Here's where you may run into an issue:
The companies that sell two way radio service often do it on a per radio basis. Some do it via "air time".
The way the know which radios are yours is by the radio ID.
Usually they'll want to lock down your radios to keep you (or another shop) from programming up a bunch of radios with the same ID number.
Probably not something you even considered, but it's what the service provider will be thinking.
Unless you need multiple talk groups, you might be better off just finding a shop that has a community type repeater where you can run single channel analog with your own tone.
Usually buying the radios first isn't the way it's done, but I guess you've had them for a while.
Many of the LTR systems are getting replaced, so while you might find one, you'll probably be looking at new radios in a few years anyway.