letters are not for review papers. If you have a budget for that, you can try IEEE Access. I'm a reviewer there and it is not limited to novel ideas. You receive the response less than one month.
If you already have the title and abstract for your article, you can use the following tools from Elsevier and Springer to help you pick a right journal among those that belong to the respective publisher
http://journalfinder.elsevier.com
http://journalsuggester.springer.com
The output of these tools shows inter alia average article processing times and impact factors of the journals.
Once you make a short list of potentially suitable journals (in particular, for any specific journal you should check whether it accepts survey papers at the journal's web site), you can check whether they are covered by Scopus here