There is one RR available in the 4th, 6th, 8th, and 10th tournament chests. If you can get yourself into even a half-way decent FS, they should be able to get 5 or 6 chests per week, netting you 1-2 RRs.
You may not be able to go to my world, but you can see my city layout on ElvenArchitect via Elvenstats. Here's a link:
https://www.elvenarchitect.com/city/planner/3c3e9dc9cf094a5ba3523bca75458d1f/
Mana and seed production buildings require a street connection. If you look where my residences are lined up, you'll notice at the top of the row, where one road meets another at a corner, I have Mana Huts along the long side of the residences.