RE: Fins for lightweight on 2005 Evo 70
Fins is a highly personal thing and dependent on the conditions, especially wave fins. All three of the fins you have can work really well. Out of these three, I only have first hand experience with the Drake Evolution 205. Its a pretty thin profiled fin, which despite not being super small handle small sails (3.5) very nicely for me (70 kg). I used it with a 5.0 too sometimes, but if you're sailing onshore or cross on conditions or have a dwonwind current, you might want to look for something bigger. The 8.25" North shore could be an option, but is not neccesarily more powerful, you have to compare them in a test to know.
If you're in the market for a new fin that would cover the 5.0 I would suggest the 2006-2007 Drake Natural. This is a G10 fin and as such much more resistant to tear and wear. They sail very small for their stated size, and I think the 22 would be the perfect size for you as a big fin. For me the 22 works great with a 5,0 but actually I've used it all the way down to 3.5.. All my friends that have tried the Drake Naturals confirm they have an extraordinary range.
If you after trying your current fin fins you really want to step the fin size up, even the Drake Natural 23 might be an option. A friend of mine who is a good wave sailor and about your weight likes this size a lot all the way down to 4.5.