Duration of stay in abroad before applying British Citizen

[suleman]

Hi,
I came to uk as a spouse visa,i have married to british citizenship. we've been living together for almost 5 years. I have recieved my "Full Settlement" few months ago, I'm now deciding to go abroad to see my family for 6 months. I attended esol classes and obtained all certifications necessary for British citizenship.
I have not applied for naturalisation/British citizenship yet and thinking to apply on my return.
Please could you advise me on:
1) Can i apply for naturalisation/British citizenship if i stay abroad for 6 months+?. Application will be made from uk.

2) what is the maximum length i can stay?

3) From above scenarion, is there anything which will cause problem on making application?

Please answer my questions

[vinny]

... have not spend more than 90 days outside the United Kingdom in the last 12 months of the three-year period; and ...

[suleman]

I have not been outside of uk in last 4.5 years.
we are living together as married couple.
can i stay more than 90 days outside of uk as i have reached threshold of 3 years.
thanks

[vinny]

If you are eligible now, then you should apply ASAP, before you depart from the UK for longer than 90 days and subsequently fail the residence requirements.