Good choice David, I don't think you'll go far wrong with Victron or Mastervolt kit. Buy the best, cry only once. Unfortunately, that's not always affordable, but there's more posts here starting "Help! My Sterling....“ than similar about Victron. Don't even start on the “I've just bought a Chinese wotsit on eBay and...":)
There are those who champion separate units for reasons stated, but there are many advantages to a Combi too and, personally, I'm with those who come down on the side of the integrated solution. But then, what do I know: I have electric windows in my car - now there's complexity that's bound to end in tears, apparently.