If you need 3oz of lead in the tail with the .25, you may still be a little tail heavy with the .40
Actually I added up all the little 1/4oz squares last nite and I had 24 of them (6 oz!!!) in the nose. The 40 ASP will help a lot with the balance, although I still might need an ounce or so of lead.
I was planning on using my 10x6 or 10x7 prop.