Here's where I have to apologize, earlier I couldn't get the page to load. Here's a link to "Amazon Choice" touchscreen portable
monitor that from the information I could glean, appears may be a candidate for you. It looks like they have a variety of choices. Again, I get that the return issue is a major consideration, and since I am in the US don't have that challenge (at this point) but I wanted to see if I could contribute in a meaningful way. We're about 6 months away from 1)
boat acquisition and 2) moving onboard full-time.