5.30kg Marris Otter 87.5%
760g Crystal Malt - 60L 12.5%
30.00 gm First Gold [8.00 %] (60 min) Hops 20.9 IBU
30.00 gm First Gold [8.00 %] (15 min) Hops 11.5 IBU
15.00 gm First Gold [8.00 %] (5 min) Hops 2.1 IBU
10.00 gm First Gold [8.00 %] (0 min) (Aroma Hop-Steep) Hops -
Some questions:
My initial thoughts are that 12.5% crystal is quite a bit of crystal, does anyone else think that

I want this to be around 35IBU, Beersmith gives me the figures above, but I'm not sure, will I really get 11.5IBU from the 15 min additions?
On the above thread Slurp mentioned adding the 10g 0 min hops to the fermenter, I've not done this before but it sounds interesting, anyone tried this and what were the results.
And generally what are peoples experiences with this hop, is an all First Gold beer a good idea, or does it sit better with other hop varieties?
I also want to try out a liquid yeast, but not sure which to go for for this sort of beer, any pointers on that would be great!
Suggestions for improvements greatfully received.
Wez