Mate, start in Sydney head south down the coast...following the water as it warms. Great surfing and kiteboarding along the coast and awsome camping in good camping grounds, Australian bush-beach and National Parks. From Ulladulla to Narooma to Pambula (Saphire Coast - absolutely beautiful beaches, forest's and native animals (safe not too many nasty things - just keep an eye out and be sensible - snakes and shark's) awsome snorkelling and fishing on lay days). The Merimbula annual kiteboarding and windsurf comp is on in November and you can camp almost on the beach, def worthwhile as good surf, wind and cool place. Then follow the coastline from Mallacoota to Lake's Entrance (heaps of good place's - let me know as far to many to mention today, same as south of Sydney to Victorian boarder). You will be impressed with the road trip. Lakes Entrance to Willisons Promontory (Sandy Point, Inverloch and more) then hit Melbourne for Peak of Summer NYE party and get some work to get more cash. The Surf Coast and Mornington Peninsula are great for all water sports (Port Phillip Bay has kiteboarding location's all around it and works on every wind direction). Then head to Adelaide following the coastline again...so many places between worth a stop before the SA boarder, then SA, spend a day or two Robe also has a comp.. Then the Coorong (simply amazing) Adelaide has a good kite community and some good kiteboarding. The explore along the remote SA coastline to Streaky - Cactus... Some awsome surf knarly coast-desert scenery and big farkin shark's (but once again just be smart and you be ok...the locals are more scary).Then to WA across the Nullarbor to Kalgoorlie (4WD recommend and good camping equipment and bush survival skills - which you have learnt by now via your travels) Kalgoorlie south to Esperance on WAs coast. Esperance to Perth to Broome along the coastline again so many good spots, surfing, kiteboarding and diving/snorkelling and fishing...all in camping areas (except for Perth and just around) but the WA crew will have you sorted.... Then go to the top end NT and down the east coast line Townsville, Cains, surf starts again from about 1770, then to Noosa (Sunshine Coast) Brizvagas then the GoldCoast to Bryron along the coast stopping again at so many places to mention (surf, kite, camp etc). Then down the coastline to Port Macquarie, Coffs Harbour, Angoorie, Hat Head to name a few... to Sydney and that will do you this time....try and do it all before Autumn as the wind drops out but hey the surfing, snorkelling, swimming beach lifestyle goes to end of Autumn. You can always go back up north for winter (but cyclone season is over so the surf is small) or fly back to WA and explore more or even better fly to Christchurch New Zealand and hit the South Island for the snow season. Get work in Queenstown and stay there for winter then tour NZ in the warming up months and Summer hit the north island and live the dream two years of your life.Each section of the areas i mentioned has it's own feel, beaches, reefs, forests-bush, animals (landvand ocean) people and places it is worth it i assure you...ive done countless road trips and hours, weeks, months, year's worth really and still haven't even started to make a dint. You could spend rwo day's at each location with half to a day's drive max between each and still not have enough time at each....
Good luck to you and ya sister, safe and awsome travelling and you will have such an epic time and so much footage that you will need a big hard drive to store it on and cloud back up. With time to edit it on those chilled nights.
Peace & Hang Loose