User blog comment:Mush9/Beyond BIG FOOT (ideas in comments)/@comment-24920136-20161106172224/@comment-30118230-20161106181628

Not even Fish number 7 would be easy.....

I suggest starting with a much smaller number,like a Chained-arrow notation level number and then climbing up the stairs through larger sections (5-6 entry linear,7+ entry linear,two row,planar,higher dimentional,tetrational,higher,legiatic,beyond legiatic array notation level) and finaly when you're done,jump towards the uncomputable numbers.