Pack size/weight for 7 weeks?

[rhea]

hello! I am unsure of the size to buy for my backpack, but most people seem to say a 65L..

I am 18yo female, 5"9 130lbs, never carried a backpack in my life-not even to school
I am going in spring (May, June) for roughly 6-7 weeks, to London, Paris, Switzerland, Austria, Hungary, Czech

I decided to do a "test" pack and everything fit fine, weighing 7kg
I packed everything comfortably into a 31L normal backpack, but the size I want to buy is 40-45L

the first pic is Everthing packed- and the second shows the mesh clothing bags packed with a 7"remote for size next to it.

s35.photobucket.com/albums/d171/vinylcrocodile/Travel/

In total, I have packed

Pj shorts+singlet
jeans
light jumper
coat
scarf
zip hoodie
joggers
4 dresses
1 skirt
3 Tshirts
2 singlets
1 dressy top
2 pair tights
6 underwear
1 bra
1 socks
a bikini
sunscreen, deodorant, brush, elastics, nailscissors kit, toothbrush, toothpaste, razor, facewash, charger, adapter, hair straightener, guidebook, journal, pen, travel clothesline, sleepsheet, traveltowel, headband

Is there anything Im missing and would that size be okay?
thanks!

[Jules80]

You may not have enough warm clothing. I don't know which months you will be where but london, paris, switzerland and austria can be quite unpredictable and chilly in may. you could encounter temps as low as 10 C or as high as 25 C or so. nighttime lows particularly in the mountains could be much less.

you'll also probably buy some souvenirs along the way, you want to make sure your pack isn't too full so you can put stuff in.

Jules

[rhea]

the order is mid may paris, then switzerland, eastern europe, then London in early July. I have a jumper, coat & scarf, plus jeans...Im pretty good with cold weather so that should suffice...yeah?

I bought the High Sierra Passport, but Its still on its way.
The website says its 45L so if my stuff fits into a 30L then the extra 15 will give me room to move around i think