My Turn To Take On A Transom

[UrbanAngler]

I got to work the past couple of days and put a good dent in the project.

Got the new coosa core laminated in and the old skin back in place.
Also started scarfing in my joints.

A few questions:

What should the exact height of the new transom be? Factoring in the thickness of the fiberglass of course, what should my finished height be? Should it be measured from the keel along the angle of the transom to the top? Or measured from the keel perpendicular straight up to the top? Right now the new core is at about 25" when measured perpendicular and 26" when measured at the angle of the transom.

When scarfing in the new glass into the splashwell, Should I stick with about 3" of glass around the entire permineter and try to scarf into all the grooves and curves where it meets the hatches? Or just stick with the straight parts of the Splashwell and fill in the edges with thickened resin?

How perfect should I try to grind down my 12/1 scarf? Right now it looks pretty good, but obviously not a perfect even bevel. When applying new glass over scarfs, should I start with biggest pieces first, as recommended by West System, or start with smaller pieces and build up to the largest, as I have read elsewhere?

A lot of work, which I expected, but comping along nice.

See pics for progress: