Whats the perfect set for Agricola solo series using E, I, and K decks?
The way I like to play Agricola campaign mode is to pick 7 occupations and then play through sequentially. Each game I leave one more in play as permanent and leave the others in my hand in future games.

Probably my favorite seven to start with are:


Field Watchmen
Wet Nurse
Church Warden
Lord of the Manor
Manservant
Grocer
Pieceworker


I generally like them in this order (and leave them in descending order, too, so the first permanent one is Field Watchmen). First game get the Stone Oven for food production, doing double baking bread, by sowing 3 grain fields before the first harvest.

My first turns normally are something like:


Occupation (Field Watchman) / Take 1 Grain
Take 1 Grain / Day Laborer
Take 1 Grain / Sow
Clay (4) / Fishing (for 4 food)


At this point you've got 3 sown fields of grain, clay, and your next turns can look like:


Fireplace / Wet Nurse (with grain-->food)
Wood (12) / Reed (6)
Sheep to food (7x = 14 food) / build rooms (+2 people)


At this point you have some leftover food from the sheep still (only needed 8 that round) and are pretty setup. The rest is pretty straightforward.

Also, I normally setup the board slightly, forcing:


Sheep = round 1
Stone = round 5


The rest don't matter as much.

This combined with the above normally lets you get 65-70 points your first game, which then gives you 10+ food for your next starting game.  Wet Nurse is critical  in the campaign because once you get food supplies you can always add two rooms to your house on Turn 5.

Once you start getting significant quantities of food at beginning - which you will after your first game because it's pretty easy to have 15+ points over the game point values initially  and you get 1 food for every 2 points over -  the Pieceworker/Grocer become very useful and powerful, because you can buy extra resources earlier in the game (such as vegetables and stone).

After a few games of occupations, Manservant becomes very useful - it's easy to get a Stone House with 5+ turns remaining in the game after a few solo rounds so you get basically 15 food for this.

Generally, I like to also leave all the animals on the board until the last round (except I normally take sheep for food around turn 6/7, early enough when the food is helpful but also can let them replenish to 7 by the game end). Your first game this is often harder because you normally need to raid one of the animals for food and often can't swing the 4x Stable/3x pasture combination to give you space for all of them.

There are a lot of minor improvements that can make this strategy go on steroids too (like Axe, which means you can reliably add family members prior to the first harvest if you start with Church Warden and get the 4 immediate wood). Or Straw Thatched Roof which gives you three extra rooms with people pretty early with Church Warden, Wet Nurse, and Pieceworker.