I have been reading thread upon thread and still my partner and I have some concerns. We were hoping you guys could help us with some answers - we are going to probably go ahead and phone the helpline at 13 dollars per minute

The situation:
I am due to travel home to the UK in April or May next year. We are saving hard and I will be coming back to stay with some friends in London, find a job and then send for my wife to join me as soon as her visa is processed from her home country. Anyway, we have the following concerns:
1) Assuming I find a job - is it enough to show a letter of offer from my new office to prove i will be able to sponsor my wife, with a breakdown of finances obviously, or am we looking at 3-6 months apart in order that I accrue the payslip evidence?
This is a horrible one, it plays on our minds the most.
2) Evidence of marriage - our wedding was a registry office job. We didnt tell parents and we didnt cut any cakes. I see a lot of threads (like the Pakistan one) claiming that photos with wedding dress etc etc, are all important. I feel this has to be a misnomer - not everyone does this wedding. Am i right?
3) Place of residence - since I will initially be living with friends I really dont want to run the risk of an overcrowding ruling. I will try to find an apartment before she applies, failing this I wondered about using the address of my family home in Scotland as her address. Its owned.
These are the main ones on our mind right now, and I would hugely appreciate any feedback on them. The whole thing scares us stiff what with 90% of the threads we read being help threads with unfortunate people being apart for long periods of time. We wish to make my wifes application as much of a shoe-in as possible,
Thanks for your help!