G reetings all,
I'll offer my help, such as it may be, as time permits.
In the past, I recommended Auto CAD, as that was what I was trained in. Later, I began to recommending other systems that offered compatibility with Auto Cad and it's native .dwg file format, at a reasonable price to the user. One of the first was Turbo CAD. It is a full function program, and still a good value.
Later, Delta CAD became available at a very decent price, even though it is not as strong a program as the others, it's capable of doing all we need, and the price is very good.
I just down loaded Draft Sight. It's a free download, so the price is very good, and a first look using one of my drawing files from my main CAD system, shows that it will work almst seemlessly without any problems that I've been able to find so far.
I'm going to attach some files, in .dwg format. You may find them interesting, and hopefully useful. These are from my Designer series. It is a good idea, but it's been out there for almost 2 years, and no one has taken the challenge to work with it.
What it is, is a drawing with a good airfoil, and wing design. There's a fuselage layout, and centerlines for setting up and using the wing in your own fuselage. Ther's alot of room for you to use the basic drawings to create your own design, with a reasonable expectation for success.
This deigner file uses a wing with a total of 500 square inches.
Like I said, I'll help out, if you getmin a jam, but try reading the help notes first.