Purchase advice Transporter for private / fishing / work path

My Peugeot 307 SW will soon be soft. I am looking for a private use + fishing / holiday trip 1x year / trips to relatives (about two times a year 800km) and the work path (per day 50km) about 12-15000km a year, an affordable used transporter. Here’s my idea: – up to 600€ – Diesel (up to max 8 l consumption) – up to 100000km -low tax -low tax insurance (partial casket 300€) SF9 -3 seats at least – loading area where I can make two auxiliary beds to the wall and to sleep on it (night fishing) – shelf installation for fishing stuff etc. – possibly small toilet corner for camping toilet -climate (mandatory) -AHZV -repair costs affordable for the normal worker I only got stuck at the Ford Transit and at the Fiat Ducato during consumption. Also according to fuel monitor. I am very excited what you can recommend to me. Maybe you have a completely different idea. RV is not useful because I do not use it so often and for the work path nonsense I think.