Whatever MarkJ said, I ditto. Other practical obervations are: 1) If you are doing this alone, get a book, a good book. Like Guitarmaking -Tradition and Technology and read it from beginning to end before you start even cutting the wood. DO not just start reading and start making at the same time. You will find that there is a reason for everthing said at the beginning, and if you have not read the whole book, you may miss some of the details. 2) The bracing does not really need to be structurally that big. If you have a guitar now, take a mirror and look inside it. Check how the bracings are shaped. In custom made high end guitars, you will notice that bracing are very thin, maybe not too tall, and shaped in a way that show no right angle. Although, some will have a triangular form. 3) By the tone of your question, I am not sure you used solera. If you did not use it, you must have used a concave dish or some other form of depression in a piece of wood to force/glue the braces in. 4) I would not worry too much about trying to thicken the soundboard with a variable thickness (it is your first guitar - you just want to get it done soon). At the time of finishing the guitar, you will have the opportunity to sand some of that extra thickness off. I kind of do a box tuning by sanding a bit here and there trying to keep the top of the soundboard even until I get the note or tone I prefer for that guitar. At this point, try to follow your plan only. DO not worry about tuning. Make sure you sand all your internal bracigs to 200 grit. The bridge plate could have been half of that thickess.