The words "Map" "King" and "Zenith" were all used in the same post here, which is the key to summoning me out of the shadows. Ignasia7, you are free to use any map you like for any purpose you like. Of course, by all means use the Empyrea's Eye View map, if that would best suit your needs. Otherwise, if you prefer, you are also welcome to use this cleanly ripped in-game map (from the PS2 version) that I apparently neglected to ever provide to Woodus:
My son used a combination of his Christmas money and his savings to take advantage of boxing week sales and purchase a PS4. So... I'll finally be getting to experience DQ Heroes and Builders. I could always justify the cost of those games, but never the cost of the console itself. Now we can also look forward to Heroes II and presumably DQXI. Sure, I got and gave some stuff for actual Christmas, but who cares about that! Dragon Quest on PS4 in my house. That's what's really important about the holiday season
I know you mentioned that your computer doesn't do well with DS emulation, and I completely understand why that would make you think PS2 emulation is definitely out, but I would actually encourage you to give it a shot. DQ5 for PS2 is incredibly light on PC resources, and will often play at full speed (or nearly) on crappy computers, where a more resource-intensive game (like DQ8) would definitely be out of the question.
I think it has a decent chance of working well for you. If you need help with emulator configuration, there are plenty here that would be willing to help (including myself). It may not be viable, like you suspect, but I know from my experience that it runs way better than expected on crappy PCs.