Hope you don't mind Q but I took your downloads and made them easier to implement in the game. I took your downloads and put them in one folder that goes in the mod folder of the game directory. All one has to do now is put the mod folder I created and paste it in the mod folder of the game directory. When starting a new game just choose the mod from the drop down menu and then select the custom schedule in the next screen.

I also added some mods to your schedule and made another mod if one wants to use it. This mod has qwsa's schedule and showcase and I've included my UK Jockey and Trainer lists and a Stable list for 2018 which is 100 strong for each. Also added were Jockey and Trainer lists and a Stable list for Ireland and France but these two are only 20 strong each. Included also are my Stud Farm files for these three countries.

Hat tip to qwsa for the fine work on the schedule and showcase files.

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Instructions

Download zip. Extract to place of your choosing
Inside the zip are two folders - qwsaMod and qwsaSCMod. Copy and paste these folders to ~Program Files(x86)>Starters Orders 7>mods
There are also two files - "sched_f_qwsa.db" and "sched_f_qwsaSC.db". Copy and paste these two to ~ Documents>StartersOrders7>exports>schedules>1

You must start a new game for these to work. When starting choose the mod you want from the "available user mods" dropdown list. Then choose the corresponding schedule on the next screen from the custom schedules list. The schedule is pretty big so it takes the game a long time to create the schedule at the beginning. Don't lose faith. It will(should) eventually get to your stables screen.

https://www.mediafire.com/file/vze3xg92zhjcnyn/qwsaSCmods.zip/file

That isnt right, the Irish guineas should be around the 22nd/23rd May, and the Irish St Leger on the 11th September, have you downloaded everything? Including the Irish feature race file?