Impossible to answer without knowing more details...What other pieces have you learnt/are you learning? How did you find the 1st TE?
Hmm, I think that the other transcendentals, except 3 which you don't want to learn, are probably beyond you considering what you said. They are all MUCH more difficult than the first one...I would probably develop some technique with the Etudes of Chopin first, however if you REALLY want to give one a shot, I would learn 6, 'vision.' It suits the strengths you mentioned and is not one of the more difficult ones, however it will be a huge challenge for you, especially the tremolos in the second half of the piece.
I actually tried some parts from no.7 "Eroica" (The octave arpeggios) and I almost did it. Actually, this is my favourite of the etudes.
The finished product should be a confident, beautiful performance - NOT a struggle to the finish line with musical errors abound.
why not 'mazeppa' no .4,. either it's very difficult............