Hakone-Kawaguchiko-Kyoto in 1 day?

Hi everyone..
30 March - 6 April 2015 will be my first trip to Japan for a short holiday with my husband.
Sightseeing is our priority rather than shopping ;)
Need your comment please for our itinerary, thanks for your help :)

30 March - 1 April : Tokyo

2 April :
Tokyo(fr Odawara)- Hakone(Hakone Shrine,Lake Ashi sightseeing cruise,& Owakudani) - Lake Kawaguchi(want to try onsen)
- Is it possible for us to make it one-day trip?
- Do u have any suggestions for us to choose a nice place to try private onsen?
- In your opinion, better we spend the night in Lake Kawaguchi or Kyoto? (our next trip is Kyoto)

3 April :
Arround Kyoto

4 April :
Arround Osaka

5 April :
Universal Studio Japan, and the evening back to Tokyo

6 April : Early morning to Narita Airport (Flight dep at 09.35 am)

Note: This itinerary is flexible, so anyone have another suggestions?

Thanks a lot for your help(s),
Have a nice day, everyone :)

Erm...

2 April :
Tokyo(fr Odawara)- Hakone(Hakone Shrine,Lake Ashi sightseeing cruise,& Owakudani) - Lake Kawaguchi(want to try onsen)


Considering if you take romancecar:
- 7:00am: Leave Shinjuku (not factoring time you need to reach Shinjuku from your hotel)
- 8:40am: Arrive Hakone Yumoto
- 8:40am to 9:40am: Hakone Yumoto to Moto Hakone by bus (35mins travel, 20mins waiting for bus)
- 9:40am to 11:30am: Hakone Shrine
- 11:30am to 12:00nn: Lake Ashi Cruise (timetable:http://www.hakone-kankosen.co.jp/foreign/en/timesheet/index.html)
- 12:00nn to 12:30pm: Togendai to Owakudani
- 12:30pm to 1:30pm: Owakudani
- 1:30pm to 2:00pm: Owakudani to Souzan

You would possibly be done with everything by 2 and have half a day to try Onsen. It's possible but it seems a little rush, and this is not including anything you may want to do on the way, that are covered in the round course.

- Is it possible for us to make it one-day trip?

As above, its possible if thats the only 3 things you want to see. But if not, do make extra time for other things as well. I would not advise rushing in Hakone, especially if you're going to rush off to Kawaguchi, and then on top of that Kyoto.

- Do u have any suggestions for us to choose a nice place to try private onsen?

If you're asking about Hakone, in April I'm not sure if its already fully booked, I previously booked a private onsen at Hakone Yuryo - you can ask your Tokyo hotel to do the booking for you, that's what I did.

- In your opinion, better we spend the night in Lake Kawaguchi or Kyoto? (our next trip is Kyoto)

Sorry! Can't answer this I have no idea but I don't think Lake Kawaguchi is along the way to Kyoto - I could be wrong. Kyoto's pretty accessible from Odawara, which isn't far from Hakone Yumoto.

Hope this answers at least some questions? :D

my suggestion is:
30 march going to kyoto (if u arrive early)stay in kyoto

31 march : kyoto, night go to osaka (stay in osaka)

1 apr : Universal studio, stay osaka

2 apr : osaka, then go to hakone/ kawaguchi (stay in one of them)

3 apr : lake kawaguchi/hakone, back to tokyo
(stay in tokyo)

4-6 : tokyo

what time u arrive at narita?
dont go to universal studio/ hakone/ kawaguchi in weekend if possible

Thanks a lot @bloodprincess & @red for your suggestions :)

We'll be arr. at narita on Mon, 30 march 2015 at 4pm.

Warm regards,
happygofly