With any self build, unless you can afford an Architect/Builder to oversee the whole project, you're going to be chasing people, materials, answering questions and more.
My own project is up to roof stage, timber frame is finished, roof finished but outer brick/block leaf is next, then soffit, fascia, gutters, then porch, then windows & doors. Each have their own challenges. On top of my day job!
I've a delivery of lintels tomorrow and I only thought to ask what siz