IPA recipe, opinions sought

Ok, so I know the world needs another IPA recipe like a hole in the head. However, I've got a stash of hops I want to use up.

I'm looking for comments/critique of this recipe I'm due to brew next week.

I'll be splitting the batch and fermenting half with Wyeast Ringwood and the other half with Wyeast Denny's.

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I'd move the Challenger addition to 70 min with the Summit to get your IBU's and minimize clock-watching. I'd move all 3 Simcoe additions, and the Amarillo addition to flameout. Simcoe as a FWH seems wasteful to me - it's such a delicious hop, why relegate it to a mere bitterness addition? Get your IBUs from a higher AA%, less delicious hop (like the Summit or Challenger). Ditto for Amarillo, it will play nicely with the Simcoe as a flavour/flameout addition.

Thanks for the suggestions - some good food for thought.

My reasoning in using the Simcoe and Amarillo as FW additions was to get some IBUs, but also to retain flavour/aroma while adding another layer of flavours and complexity that adding them at flameout wouldn't give. Well, that's the theory anyway, ha ha.

Understood, but I don't believe you'd get any aroma or flavour from a FWH addition. Anecdotally, some brewers report that FWH give a slightly "rounder" bitterness, but there's no science to support that any flavour or aroma would survive the 60 minute boil. As with early boil additions, the alpha acids will be completely isomerized, contributing only bitterness.

I suppose it's a 'suck it and see' approach to FWH. I'll try it with the finishing hops all at the end next time for comparison.

I've done a bit more reading, competed recipes and taken opinions onboard. Here's the mkII recipe.

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I went ahead and brewed this, got a nice clear wort. Hit OG bang on 1060 after the boil and ended up with 25 litres after hop leaf losses.