Krayziekid
Observer
There is a station beaconing the repeater info, as you come into the area with APRS running (or turned on once you get there) you would eventually receive the packet that contains the repeater info and your radio would decode and display it. I personally prefer to have my APRS info display on my phone or android tablet so that I can use the map feature to see where other stations and objects are versus seeing a direction heading on a screen, it makes it easier to type messages as well. Not all repeaters will appear on APRS, only those that someone has decided to beacon their info.
Yes you have to be able to hit a digipeater that can hit an I-gate (internet gateway).
The International Space Station sometimes operates an APRS digi and there are APRS satellites up or soon to be up as well.
To be honest I would go with the 2730a, get a feel for things and get used to it. No reason to complicate your first ham radio with stuff like APRS.
You can always add a 2nd radio for APRS later as I did. It can run in the back ground and not bother my voice dual band radio at all. I don't have to worry about setting or turning something on/off when I want to switch to voice or anything like that.
For the record I use a Yaesu FTM-3100 with a mobilinkd TNC and external antenna for APRS. I started out using an HT with the Mobilinkd TNC but the digipeater coverage in my area was not great and a I needed a bit more power.
Thanks for all of the input and answers. Yea, I think I am going to just go with the 2730a. Seems like a great place to start and I really don't need to overcomplicate things out of the gate. Thanks!