Are you opposed to buying a new drive and putting windows on that? You
would have more space for your projects and would not have to resize and try
a risky windows over linux install. I assume this is your lively-hood and
it's important to you, it would be a few extra bucks well spent. I have had
problems in the past with losing access to the windows boot loader and not
being able to access Windows at all. The result was spending many hours
learning about the linux boot process. Time well spent, but you don't want
to have to do it with a deadline over your head. Since then, I have kept
bare metal windows installations on their own separate drive, and if I can't
reach Windows through GRUB, I can just pull the drive out, set the Windows
drive as master and boot straight into it. It's inevitable if you are
learning linux that you will make some mistake that can jeopardize your
system, everyone here has made them. It's best to limit the possible
damage, especially if your income depends on it :)