That recipe should work well with just about any nutrient you have. 71B is a yeast with very low requirements for nitrogen. If you can tell us exactly what kind of nutrient/energizer you have available we can help you dial it in exactly.
That recipe should be quite good, but it probably won't have more than 14% ABV (that being the yeast's tolerance level). Don't let the starting gravity fool you. You are adding about 1.5 gallons of berry juice that will have a gravity of no more than about 1.040 so the effective starting gravity is somewhere around 1.130. I started a batch recently where I mixed up 5 gallons of must with a gravity of about 1.180 or so, and added about 60 pounds of berries and fermented it dry. It doesn't have 24% ABV. The berries produced 5 gallons of liquid (with a gravity of about 1.040) so the effective starting gravity was around 1.115 and I should have about 15% ABV.
You can make your starter with a little honey, with malt, or whatever you like. My personal favorite is a little apple juice, to which I will add some of the must in steps.