I'm going to try to make this as simple as possible. Try to... haha

I have everything installed and everything works great, but im having three issues.

Ive read thru 90+ pages and havent found a clear cut answer and dont want to spend the time changing every line twenty times till something works (I work full time and this "webstore" is not my full time gig).

I am selling Products that come in many colors.
I have it setup so that on the Product page, there are check boxes for each variation. I need it to stay this way.

Problem 1
If I dont select a checkbox, I can continue the order without anything selected and even check out! Is there a way to only continue if only a check box is selected?

Problem 2
This Product page also serves as a history of the different variations of the product for consumers information. When a product is no longer available, I would like to keep it on the Product page.
Is there a way to eliminate the checkbox for that variation? Or is there a way to have an add to cart on each variation, versus using checkbox's and having one general add to cart?

Problem 3
I have two variations, one with a stock of 4, one with a stock of 0. The stock of 4 works great and doesnt allow someone to check out with more than 4, but the one with zero, even though it gives the warning message, it will let you checkout with an order.

Thanks in advance everyone.

This site has helped me out sooooo much!