Akula,
To the best of my knowledge there are no Lakers between Nina Moose. and LLC the water is too shallow.  However, there are Lakers in Oyster, which is a little west of Agnes, along the route to LLC.
 With only 4 days to play with, I would consider basecamping on Agnes, the campsite to the left of the 115 rod portage to Boulder River is a good one, I stayed there 5 days on a solo and enjoyed it!  You can day trip to Oyster for Lakers.  Boulder River holds some great smallie, walleye and northern fishing. Where Bottle runs into LLC is a great fishing area along with the Tiger Bay area.  You could also daytrip into Iron via Bottle Portage and go see Curtain Falls, Warrior Hill, and the LLC pictographs are nearby as well.  Let me know if you have more specific questions and fishing and campsites.

Bruce