Dark Crystal 150L substitute

I am trying to make a Maple Ale and the recipe calls for UK Dark Crystal Malt 150L - my local homebrew shop, he doesn't have any in stock and suggested I use Crystal 120L and just add an extra 5%. I also have some Caraaroma which I believe is in the 130-170L range. Any idea which one would be better or if there is a better alternative?

This is only my second batch without the use of a premade kit, so I am not sure how they compare in terms of flavour, aroma, etc. Any suggestions or advice would be great! Thanks!

i'd just use that much c120, and not worry about it. they're close enough

I think caraaroma is around 130, I've seen them listed as substitutes for each other.

Why would you add 5% more? They should give the same PPG. You can try making your own. Just google "make your own crystal malt." I did this once and made a nice English Pale Ale with only 2-row that I had on hand. I can tell you though that the crystal that I made varied widely in color-probably more than 30L, so just using the 120 is probably just as good of an option.

Awesome! Thanks!