It appears there are some delays in processing so I would say 5 weeks wait.
I already have a PR sponsorship in progress for my wife and since that is going to take forever, i applied for a TRV in the meant time. i mentioned the PR application details in the invitation and cover letters because I heard that this will be considered under dual intent as long as we can convince the visa officer that she leaves after her intended visit period(two weeks). I have added uploaded the following supporting documentation. Please let me know if i missed anything.
1. Invitation Letter + sponsor PR Card, passport, driving license
2. Cover letter from the applicant.
3. PR sponsorship application confirmation letter
3. Marriage certificate + photos - for proof of relation ship
4. Purpose of Visit - travel itinerary, return flight ticket, employer leave letter, employer letter
5. proof of funds from sponsor - employer letter, last 6 months payslips, bank account statements, explanation letter for no NOA
6. poof of funds from applicant- employer letters, last 6 months payslips, bank account statements, income tax returns, Shares and mutual fund holding statements.
7. Old passport with immigration stamps to Maldivies and Singapore. Am not sure if this travel history will be considered or not.
8. New passport, IMM5257e, IMM5257b, family information form, digital photo