Hi again, Shell
Hmmm. The main issue does seem to be DH worrying about his Parents and maybe his maternal grandparents as well.
The only way that DH's Parents can be absolutely assured of being able to spend half of each year in Sydney in the long term would really be if they get a Contributory Parent visa and the sooner the better for that.
DIAC regard a 50/50 split between the UK and Oz every single year as "migration" and they really don't like it to be too regular or to go on for too many years. They get the grlic and the crucifix out if they think somebody is trying to use long-stay tourism as an alternative to proper migration.
If they only have two children between them then they would be OK on the Balance of Family Test as soon as DH is living in Oz and has
PR and as an Australian Citizen, you would be able to Sponsor your in-laws once you have spent 3 months back in Australia.
Armed with a CP visa, Parents can come and go from Oz as they please. If your M-i-L's Parents are in reasonable health an they can also meet the Balance of Family test (and could afford it) they could also get CP visas in due course once M-i-L has
PR in Oz and is "settled" there.
My mother was 86 when her CP visa was granted around 16 months ago, and I have heard of CP visa applicants who have been much older than Mum but who have migrated successfully.
The reason why I would advocate considering a CP visa sooner rather than later is partly because it would avoid future potential ggro from DIAC. Partly, too, the CP visa is now becoming significantly over-subscribed and at the minute, not even DIAC know whether the new Minister for Immi is likely to be minded to increase the annual quotas of Parent and CP visas. Please see this article by Alan Collett:
Go Matilda - Your Gateway to Australia - News
There is no further informatio about this as yet.
Also, the 2nd Instalment of the visa application charge for Contibutory Parents is linked to the Dept of Health's predictions about the likely future cost of providing healthcarein Oz. When the visa was new in 2003, the 2nd Instalment was $25,000 per parent. In 2006/7 is was £29,330 per Parent. In 2007/8, it has gone up again to $31,555 per Parent and apparently this was an increase of around 7.5%. (I am no mathematician and haven't a clue how to work out percentages, but Alan Collett is a Chartered Accountant as well as a Registered Migration Agent, so I just believe whatever hee says about anything involving Maths!)
The visa application charge "freezes" at whatever the rate was in the year whenthe applicaiton is lodged and the visa year runs to 30 June every year, in line withthe Australian Financial Year.
So although there is o screaming urgency to consider any of this in the very immediate future, I would suggest that you and DH should discuss it before the end of 2008 or so.
Best wishes
Gill