Words with 'a' as the first letter that end with 'hoo'

What is the best score you can get in Scrabble from this list of words with 'a' as the 1st letter that end with 'hoo'?
As there is only a handful of words available, the only word you can play for is 'ahchoo' for a score of 14 points.

In total, how many words are available using this combination of letters?
In total, you can make 2 words.

Which word from this list has the largest letter count?
The biggest word you can assemble from words that start with 'a' and end with 'hoo' is 'ahchoo', and it consists 6 letters.