Danny88,
hangar will depend on where you live as the cost is variable & you will see a considerable difference including hangar keeps liability if it is required.
Insurance will vary depending on your experience on type, where it is hangared and how much you wish to insure for.
If it is an RAUS registered aircraft you can do most maintenance yourself but, VH registered may be a little different which could add costs depending on who your LAME is. The cost of a LAME can be high until they get to know your aircraft, that is your first annual I would expect to cost a little more.
Landing fees are another consideration if you have to pay them as they can add up also.
At the end of the day if you are flying an RV you will have a big enough grin so don't let a few dollars bother you.
I have owned a 7A for 5 years and it is a great aircraft very slick and is a great cross country plane. I have flown some long legs in it from Albany to the Kimberlys and out into the middle of Australia (Birdsville Races) and return. It has pace endurance and comfort, your bladder will let you know when it is time to come down so you won't forget ?.
A lot of variables but if you are going into aircraft ownership you are better to cover all costs rather than get a plane and find out that you are limited to flying it because of costs.
Good luck with you shopping I hope you find a plane that meets your needs and is within your budget.
Cheers