Chile/Argentina in a campervan and possibly South Sea

Looking for a female travel partner for a campervan trip through Chile and/or Argentina. Preferably in their summer, which is our winter. To see and experience + hike a lot: National Parks, cities, Atacama, Andes, mountains, glaciers, Patagonia, get to know the country & people. Campers (e.g., from Ruka or AndesCamper) cost around €200/day, I can cover up to approx. €150 of that. I am a non-smoker/-snorer/-grabber. Similar in the South Seas, but without a campervan, possibly with a rental car?: maybe October-November due to storms+rain from December onwards. Island hopping, visiting several islands: Fiji, Tonga, Cook, ..? Relaxing, beach, snorkeling, diving?, nature, country & people. Interesting offers from Miller, Gebeco, Diamar, Pacific Travel House, but very expensive -> maybe organize it myself? Flights approx. €2000 to €2500, daily expenses quite high at €3-5000... :( Possibly also destinations in Asia + EU, sympathy + humor are important... :)