I would definitely go for special delivery like I did for my wifes FLR 4 weeks ago cost about £8 but well worth it fully insured for £500 and guaranteed next day delivery.
Regarding our friends FLR she applied in April and was granted in 48 days including biometrics so just about 7 weeks.
If your application is straight forward Rory then you're looking at a similar timetable so all should be fine for your hols.
Good Luck...![]()