A and D: We're talking about land INSIDE our city. Our land is rather larger than 12 football fields...
And I don't think anyone is suggesting that we can ignore the fish and they'll flourish. However,
I'm seeing a lot of peasants around the area who have kind of a crap life. As long as we give them work and/or a living, they will flock to us.
Besides, in historical medieval times, labor tended to be cheap and abundant.
This stuff we're going over now is all about land usage and food production.
Labor is where we are going to make a killing, hence the comment about how several peasants have crap lives and how we can give them better to attract them. Also, it totally fits with our storyline about being a peasant with a crap life ourselves at one point....
So, the question becomes, what would be better than the crap lives these peasants have/how can we attract them? What do we do with them once we have them?
Welcome to economy and military building.... Our constraints are (basically, I mean let's not make this econ here)
1.) Physical space
2.) Defense
3.) Food
4.) Support and maintenance of anybody we have come around.
Well, concerning constraint #1, physical space, we can get around that fairly easily through the obvious proper planning and also through taking advantage of the ocean (once the river dredging is done so we can have sufficiently large ships for fishing out there). That of course doesn't take into account the idea of acquiring more land in the future.
Constraint #2 is all about attracting some more of those peasants living crap lives and enticing them into our infantry, cavalry, archery, scouts, and perhaps later our navy. Also walls, lots of walls.
Constraint #3 is what all this talking stuff is about.
I say we go full on sheep, because wool is a valuable trade good supporting several other industries and also mutton is delicious. Also, if we're careful, we can perhaps graze on other people's lands (or even negotiate for the right to do so). The crapy thing about fish is, they need water sources and it's a pain to move our fish to other people's water sources. But, we can move our sheep all over the place. Hey, in a siege we herd our easily herded herd of sheep inside the walls and slaughter / sheer as needed. Bandages and dinner, hurray! Also we can be stylish and develop a textile industry, so there's that.
If we get really bored, we can set one of the sheep on fire and have it run at the enemy. We seem to like that idea in a naval context, so why not on land? Let's see a fish do that. j/k.
Constraint #4 is basically just building large capacity buildings, which we have the brick (walls) and timber (multiple floors) for so.... We just need an architect or something. Seriously, let's get some apartments going or something. We've gotta house all those soldiers and laborers we're gonna want to do all the things we're gonna want to do.