Sendai-Okamako-Yamadera-Naruko in 1 day?

I am planning a 4-days' trip to South Tohoku in the beginning of November. Any answers/advices to my following plan?

Day1: Tokyo-Sendai by Shinkansen, visit Aoba-jo and Sendai. Sleep in Sendai. Any suggestions about accomodations?

Day2: Day trip to Shiogama & Matsushima; Sleep in Sendai.

Day3: Sendai-Okamako-Yamadera then head to Naruko Onsen for sleep. Is it feasible especially since I am pregnant(but not alone)? Can I add Akiu Otaki as well? Some precise information about the distance, transport? Is it better to make it by rented car?

The below Ryokan seems to be nice - but it is NOT in Naruko and I don't know how far it is. Any recommendations of traditionnal onsen ryokan in Naruko?
http://www.ohnuma.co.jp/

Day4: Naruko-Sendai-Tokyo.

Thanks so much!

Lu

The below Ryokan seems to be nice - but it is NOT in Naruko and I don't know how far it is.
This ryokan is 5 min walk from Naruko Gotenyu station, which is the next stop from Naruko Onsen station (3min, 140 yen).

Thanks JLady. How do you think of the agenda and necessity of rent a car?

Day 3 looks quite busy. And I don't think there is efficient public transportation to Okamako In fact, I can't find much information about access to the lake at all, and I don't know how much time it takes to get there.

It sounds to me like renting a car for day 3 and 4 would be a good idea. Day 1 and 2 are relatively easily possible without a car.

Thanks for the advices. After re-checking the interests of possible destinations around Sendai, I am thinking renting a car(from Sendai) to discover more exceptional places.

D1: Tokyo-Sendai-Akiu-Zao Onsen
D2: Zao-(Okamako)-Yamadera-Naruko
D3: Naruko-Kinkasan island
D4: Kinkasan-Matsushima-Sendai-Tokyo (surely late Shinkansen)

How does the new plan sound?

I think renting a car is a good idea as you won�ft have to rush to catch a bus (in fact, there are two bus routs to Okama, one from Shiroishi-Zao station, another from Yamagata station,) but Day 2 and 3 plan still sound quite busy to me.

First off, please note that each way to drive from Yamadera to Naruko and Naruko to Ayukawa will take you quite a long time though I don�ft know the exact time.
From Okama to Yamadera is about 1.5 hour's drive. Then if you want to have a great view from Godaido, you have to climb awfully long stairs up and down and I�fm afraid it might be quite tough and possibly a bit risky for a pregnant lady.
You should also consider that the top foliage season may possibly be over by the beginning of November in Naruko Gorge, where the trail is so narrow that I can�ft recommend you to venture to walk it along. Day 3 plan would be feasible if you leave early in the morning, however, you need to take into consideration that the last ferry for Kinkasan leaves Ayukawa at 14:50. You can find accommodation in other onsen spots on the way to Kinkasan such as Sakunami or Akiu, which will make your itinerary less tight.

For your reference:
http://www.nipponrentacar.co.jp/english/index.html