"3) St Michael's - about 1:15 hour"
DLR to Bank (9 stops, 17mins), Northern Line to West Finchley (13 stops, 31mins) + 10min walk"
Hmm. . . I thought this might be a bit ambitious. . . i.e. the minutes and total travelling time.
The following is an actual journey I took just 3 days ago on Thursday at 7.30a.m. on my way to the US Embassy near Vauxhall tube station.
-
Took Bus 221 literally a stone's throw from St. Michael's Catholic Grammar School at North Finchley headed towards Bounds Green tube station.
-
At Bounds Green tube station took the Piccadilly Line straight down to Green Park and changed for the Victoria Line headed towards Vauxhall.
-
Reached Vauxhall tube station almost exactly one hour later from start of journey at 8.29a.m.
-
Walked to the US Embassy (intentional for fresh air and exercise) from Vauxhall tube station along the side of the Thames River - 10 minutes.
Total journey time: 1hour 10mins.
Please note that except for the final leg, there wasn't any walking done. Both public transport modes, bus and tube, are regular straightforward runs, i.e. not much waiting and time-wasting. Also, North Finchley to Vauxhall is much nearer than to Isle of Dogs.
For information:
(a) Bus 221 starts at Turnpike Lane (Piccadilly Line) and finishes at Edgware - and of course, the opposite direction. North Finchley is one of the stops which is 2 minutes walk to St. Michael's.
(b) Bus 134 starts in central London, Tottenham Court Road/Warren Street and finishes at North Finchley, i.e. St. Michael's. But the route takes an hour! It runs 24 hrs throughout the day and night.
Hope this helps in your planning and decision.