http://thesaurus.reference.com/browse/boastful There are some good entries here, just look at all the h-words.
Elegant is a synonym for beautiful. It begins with the letter e.
Heavenly is a synonym for tasty.
Active is a synonym for athletic. It starts with the letter a.
A synonym for hopeful starting with "opt" would be Optimism.
Boost is a synonym for the word lift and starts with the letter B.
Advance party is a synonym for in front. It starts with the letter a.
Angst
Imp.
Aperture
alias
Label is a synonym for handle (name).
Tour is a synonym for walk. It begins with the letter t.