I am really grateful to you because you always help me with new ideas, of course the 15000 power challenge is the hardest for me because I am looking for cards that give me a lot of power with a little low rent and I don't want to reach the silver level and then after my lease ends I go back to the bronze no but I want Continuing with the silver and then trying to go up the levels, reading your post might help me too.
Once again I am grateful to you my friend