New window installed, now door frame has shifted

I recently bought a house that we're living in was built in 1926. The home has 25 or so windows that I don't know if are as old as the home but they are pretty much useless. I say this because without opening the single pane window you can hear through it as if it's open and there is no insulation at all around them so the temperatures vary wildly around the house. The AC unit could barely keep up with the homes needs during the end of summer and I know that's why. My gf wants to keep the windows the size that they are 24x60 but definitely wants to change them out. From a value perspective, what's the best choice right now to replace these? Should I go double hung double pane from lowes or is there a better place to get them? Obviously smaller windows will save a little money but is it hurting the value if I do that? Also I've got 3 of these windows right next to each other looking out on to the front porch. Should I maintain that or replace it with a single large casement window? I dont open the windows much but she does, so to me replacing with a single window that doesnt open makes sense but a casement window may be better. What do you think? Thanks!

Perhaps the biggest aesthetic component of our ​first​ (modern) home, our storefront (sliding is preferred but we will take outswing as well) was goofed by our architects when they chose to use a SINGLE outswing commercial door model and storefront (Tubelite, something you see at your local gas station or McDonald's) without showing us first. ​It even has a crossbar on it, another thing we don't like. This door system is coming out of our very large format living room, so it is silly to restrict the movement outside of the living room in this way. This is more like what we wanted: [url]http://cdn.decoist.com/wp-content/uploads/2013/03/Stunning-modern-home-with-stylish-sliding-glass-doors.jpg[/url] Despite the pictures of the sunroom on the other side of the storefront in the background, this is intended to be an exterior door/view into our pretty yard but we are currently leaving the sunroom and its walls as a covered patio option and to stage our possessions which we are slowly moving from our current rental. So, we may eventually remove some or all of the sunroom walls. This is what our doors/panels look like now after the install: [ATTACH]72097[/ATTACH] This would be a more ideal design, with two doors, a more appropriate opening for a backyard or other room: [ATTACH]72098[/ATTACH] Anyhow, to the point: So, now we are 2-3 weeks away from completion on all the other elements of remodeling. Given that a design and/or locating a supplier and then the construction will most likely be outside that timeframe, we will be going it alone and pay out of pocket...if we can find a solution that we like, which is not constrained by the lack of modern options and outside the box thinking of our rural market. Any help is appreciated. Obviously we don't want to have much more labor on this, such as lowering or raising the header, and we want the material cost to be affordable. -Are there any companies that make/ship affordable DIY modular, self-customizable sliding or swing doors? -What about a single pivoting, modern glass door? Thanks in advance!