In such a limited keeper format, you HAVE to keep Ovechkin.
You have 2 more solid years with Chara so make it your mission to find a replacement by then (try to land a young prospect that hasn't fully blossomed yet or taget a team that has 2 good D's and sacrifice your offense to land that player).
Lehtonen is a good keeper, but I might be inclined to try to upgrade him as well.
Either, way, I would keep Ovechkin, even in a 2 ++ for 1 as tempting as that one...
Just for kicks, what can those picks get you next year?
Keeper league 14 teams (H2H, 20 active players keep 16 NHLers, 16 minors)
Scoring Cats: G-A-PTS-PPG-PPA-(+/-)-HITS-BLK-SHP-SOG-FOW-GWG / W-L-SVS-SV%-GAA-SO
C- Crosby, Barzal, Bennett, Schmaltz, Novak
W- Forsberg, Batherson, Nichuskin, Tuch, Konecny, Maccelli, Sharangovich, Bertuzzi, Kaliyev, Neighbours, Reichel
D- Carlson, Rielly, Klingberg
G- Hellebuyck, Demko, Merzlikins, Vejmelka
Minors:
F: Fantilli, Cooley, Bourgault, Perreault, Cowan, Ohgren, N. Foote, Goyette, Iskhakov, Denisenko, Tracey
D: Simashev, Willander, Lambos
G: Schmidt, Rodrigue, DiPietro, Gaudreau, McKay