I like the changes. If the LOP and other dimensions fit you well your changes make sense to me. If the stock isn't a good fit, however, you might consider just holding onto it in case you ever sell the gun and get a new one made. I like the stock in the video and I agree it looks better than the stock Taipan stock but I don't think that is what I would do. Attached is my latest stock for my P35-22. It's very lightly figured cherry with a highly figured oak cap. But my point in posting it is the shape. I think it is similar to your changes. It works well for me. Original stocks for P35s are plastic so no reworking those. I need more LOP and I like to move my hand away from the trigger so it lands on the last segment of my trigger finger instead of in the middle of it. Those sort of changes pretty much rule out reworking a stock anyway unless you would paint it when you are done. I doubt that is what you have in mind.
View attachment 493189