Ford Focus MK1 2004 DAW/DAB Sound new

Hi guys, I’m thinking about getting a new sound system for my focus: – Radio with Bluetooth+ USB+ AUX IN (Prio1) – new boxes – possibly new antenna?? It often sounds like they might be broken after all these years – Radioattennes adapter? – Adapter for steering wheel remote control? Can you help me further? The car is not worth much more – I know. But I want to drive it for 5-8 years (short distances) and therefore the idea with the investment.I would like to invest around 300€. I would like to have a list of all the components I need. As far as I know, a normal radio does not fit in with me, but I need such a plastic cover. How expensive is this about if I have it installed in a workshop? Would however also trust me to make the installation myself. Car data: 160 000 KM water pumped new timing belts new brake new mature new tuv until october 2019