You are already there. Congrats man that is awesome.
Constructing a block template is as easy as clicking yes or no in an app.
You probably know this, but…
When you are ready….
Step 1. Download Start 9 on a mini pc, or raspberry pi.
Step 2. Install bitcoin knots and allow the blockchain to update.
Step 3. Install Datum
Step 4. (Which is constructing the block template)
Literally go to the config tab on bitcoin knots and the config tab on datum and answer questions/ modify to you pr preferences. The config tabs have everything laid out super plain.