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The search function is the best way to find answers rather than waiting for the right person to come along - it also means you will make up your own mind based on reading full threads.
First go to FAQ section - modules - where are the modules for XOOPS 2.0.14, and also head to the links and the module repository here on xoops. In this repository you will see users ad comments below which may help you make a decision about which module.
Without heading to your site my favourite is Smart Section but I haven't played with many others.
Logos can be changed by altering the image in the theme - lots of themes to try but making your own changes can do the job. Once again haed to FAQ section - themes - lots of FAQ in there.
Custom profiles is one you will probably have to search a bit deeper for - but lots have asked about this lately.
It is also best to try handling one question at a time in the right forum....theme questions in the theme forum, module useage questions in the module usage forum etc...
Please familiarise yourself with XOOPS documentation, FAQ and search - thay are your first port of call.
HTH