Acken
Deity
One of the biggest problem with Liberty is indeed space (or you can play a 4 city Liberty game but I do not see the point of playing that). That Siam game will make you feel that since beside the capital the other city spots are meh or crowded and as you said Phitsomething will lack food.
Your best option in that case is to feed that starving city with a route or 2. It's always a better idea to feed cities that can't grow than keep stacking the capital, especially as Liberty.
To be honest I can't make Liberty wide work on all maps because of the space and luxury. What I show in videos is when it works. I can at least suggest you stick with Pangeas + low seas to make it work more often. Or just get the NQMapmod (or extract the map part from my mod) and you'll get many more maps that are liberty friendly. I also remember a celt succession game that was very good for wide in the story section in this forum.
Your best option in that case is to feed that starving city with a route or 2. It's always a better idea to feed cities that can't grow than keep stacking the capital, especially as Liberty.
To be honest I can't make Liberty wide work on all maps because of the space and luxury. What I show in videos is when it works. I can at least suggest you stick with Pangeas + low seas to make it work more often. Or just get the NQMapmod (or extract the map part from my mod) and you'll get many more maps that are liberty friendly. I also remember a celt succession game that was very good for wide in the story section in this forum.