Eureka Steamboat Ale

[adm]

Here's what I'm planning on brewing tomorrow. It's meant to be a toffee malted pale ale, with a tangy citrus hop profile. It's also using up some bits and pieces that I have in stock.

Eureka Steamboat Ale
(The Eureka is the oldest surviving wooden hulled steamboat in the US and is moored in San Francisco)

Brewlength 23L
3Kg Maris Otter
2Kg Lager Malt
500g CaraVienna
150g Wheat Malt

Target OG: 1051

40g Boadicea First Wort Hops 7.6% AA
45g Cascade 15 min 7.3% AA
25g Cascade Flame Out 7.3% AA
Target 46 IBU

Yeast WhiteLabs WLP810 California Lager Yeast 2L starter
(This is meant to ferment cleanly at from 14-18C and is the yeast used for Anchor Steam)

1 off Protafloc

What do you think? Should I ditch the Lager malt and use all Maris Otter, or with this pseudo-lager yeast am I better off keeping it? I can't go all lager malt as I only have 2kg of it left.

Anybody got any tips on this yeast?