Aluminium bar

I send you a request of aluminium profiles listed below.
Profiles will be used as a visible structural part of furniture construction, so we are interested what type of aluminium, in your offer,is most suitable for this purpose.
If you are able to offer us cut to the exact measure, the current measures are listed under option "a"(in that case it will be desirable to specify the length tolerance),otherwise the measures are listed under option "b", or the ones you can offer.
List and amounts o