Hello everyone,
I am planning a trip to Scandinavia and Balitics in the month of Aug and was hoping to get some inputs from the travel gurus here.I have put together a rough itinerary and am open to suggestion to revise the itinerary based on input here.
Again thank you to everyone for helping with my itinerary.

Date Day Place Activity
7/31/2018 Tue SF-Oslo+ 1 day
8/1/2018 Wed Oslo Arrival at 7:45 PM.Over night in Oslo
8/2/2018 Thu Oslo-Flam "Bergen line & Flam Railway
Overnight Flam"
8/3/2018 Fri Flam -Bergen "Fjord cruise
Overnight Bergen"
8/4/2018 Sat Bergen-Oslo "Spend day in Bergen and leave for Oslo later noon
Overnight Oslo"
8/5/2018 Sun Oslo-Helsinki "Take afternoon flight/train
Overnight Helsinki"
8/6/2018 Mon Helsinki Porvoo
8/7/2018 Tue Helsinki Turku
8/8/2018 Wed Helsinki Turku to helsinki
8/9/2018 Thu Helsinki-Tallinn Ferry
8/10/2018 Fri Tallinn
8/11/2018 Sat Tallinn
8/12/2018 Sun Tallinn-Saaremaa Overnight in Saaremaa
8/13/2018 Mon Saaremaa-Riga
8/14/2018 Tue Riga
8/15/2018 Wed Riga
8/16/2018 Thu Riga
8/17/2018 Fri Riga-Vilnius
8/18/2018 Sat Vilnius
8/19/2018 Sun Vilnius-Oslo-SF Flight to SF at 1:15 pm

No trains Oslo-Helsinki so fly. Just about trains - great sources of insight - www.bahn.com/en (schedules for all European trains in an easy to use site); www.seat61.com; BETS-European Rail Experts and www.ricksteves.com.

I'd try to hit Stockholm too rather than fly over it. And the boat ride Stockholm-Turku/Helsinki is awesome - overnight - great scenery seen till late at night with long days - suggest consider doing that. Then you could take train Oslo-Stockholm too. If you did all that a ScanRail Pass would be a good deal - see sites above for info on that.

Thanks PalenQ.Do you think I can squeeze in Stockholm with my itinerary or would you suggest dropping some days in other locations?