Need window treatment suggestions

Penneys is having a great sale on blinds - 50% off of custom made blinds and then another 15% if you use Penneys credit card. In our formal living room we have 4 windows that are 70 length by 25 next to each other - so there are 4 long windows that form one big window. I love this window as it looks out into our wind break. However, even with our pella windows, the sun really beats in there in the afternoon and I think it would help cut the heat in there in the summer by putting in blinds. I want to put in the Bali duvet blinds. My question is - do you think I should put in 4 separate blinds or one big patio type of blind? I'm not even sure if they make a patio blind that is that wide (120 inches wide). Thanks!