Consider the local relay situation and budget, as well as the equipment you expect to use.
If you want to operate on 50 MHz, it's still recommended to get your B license first. Most 50 MHz equipment are shortwave radios, and there aren't many that combine UV with 50 MHz (as far as I know, Yaesu and Kenwood have some, but they are not common and expensive).
If you simply want to experiment with APRS, there are a few simulation machines that support APRS, or you can research and modify/assemble one yourself, which will help you develop your hands-on skills.
If there's an active C4FM repeater locally, it might be possible to set up a Yaesu digital radio system.
If there's an active D-STAR repeater locally, it might be possible to set up a digital station using ICOM.
If there's a local DMRS (Digital Mobile Radio System) repeater that is active, you can acquire multiple DMRS devices. The prices range from $300 to several thousand dollars, and even the entry-level models are quite affordable and offer decent functionality.
If you don't have a local digital repeater, but still want to use an MMDVM box, you can also set up a DMRS (Digital Mobile Radio System) machine. (Of course, you can also use DSTAR and C4FM with MMDVM, but the cost is relatively high, making it not economical unless you have ample financial resources).
If you don't have a digital repeater or plan to use digital modes, then the best option is to simply get a good quality analog transceiver. The Yaesu VX-6R is a good choice because even if you buy a digital radio, most of its features will likely remain unused.
Furthermore, I strongly advise against QRP for beginners in shortwave radio; it can easily dampen enthusiasm.