Post Thumbnail & Variable

Hi, Sorry if this has been asked, iv searched and found similiar issues but can’t seem to get it working for mine, i have a couple of problems i’m facing, these last 3 problems i cant figure out so if anyone knows any of the solutions it would be much appreciated

(im using a custom theme)
Problem 1
i have 3 post thumbnails on my front page, and i want them to link to another page, at the moment they take you to the blog post but i’m not having a blog so i want them to link to another page on my website

when i change the post format to link it dissappears off my homepage (as in the image, the last one was set to link and has vanished)
i think iv got two options, make the link format visable on my homepage or change the standard to be able to link to another page
( image )

Problem 2
I am using jigoshop (v 1.4.8) and on items that have different variables, eg colours and sizes, once you choose a colour and a size then you want to select the other colour instead it isn’t selectable until you click on “Choose an option..” which then seems to reset it
( Image 2 )

Problem 3
for some of my products the larger sizes are alittle bit more in price, so my item price says “From ￡XX” which is fine but once the person selects the size that is the largest amount it doesn’t show them the larger price until they put the item into the basker

for example:
Girls fairy dress says From: ￡12
sizes 3-4,4-5 are ￡12 but size 6-8 is ￡14, once they select 6-8 the price just says From: ￡12, is there anyway i can get it to change to ￡14 so they can see the price before putting it into their basket?

Any help to any of the problems will be much appreciated ??