First off, supportive of TokenLogic becoming a paid service provider. My experience working with Matthew has proven to me that TokenLogic will execute, put in a lot of work, and pursue ideas that they believe are good for Aave vigorously.
That being said - I think 350K for 6 months is excessive for a team of this size with a scope this broad.
Imo, TokenLogic should be extremely specific in scope. Identify an area that they are uniquely suitable for - and nail it. Charge less for 6 months, and then once you have proven you can nail a specific scope increase price and heighten goals.