While you got the OK for the Letterpress UI from the creator, I wonder if anyone else who's unaware of that would notice and think you're a clone and ignore you?
I released my first ever iOS game* last week and it's a word game like yours. Not sure if we (two man team) just got lucky, but overnight we hit millionth game played and we've hit #1 word game in 30 countries at one point or another. People are playing about 3-5 games per second at any given point of the day which amazes me. The game took us four months to make - a month on the core mechanic and the rest polishing.
I have a pipeline of game ideas I think are very good so definitely intend to make more.
* Our game: https://itunes.apple.com/us/app/hexiled/id881274996?mt=8