CreateSpace is your best bet to produce a print book. You should be doing that as sideline to support you ebook, actually.
LSI is over your head and costs money...it's for pro publshers. Lulu is easy to do but not profitable.
CreateSpace is a legitimate way to publish print books to make money.
It might scare you to have to produce pdf's of your interior and cover in order to upload, but it's not so bad. You don't need to use adobe or anything fancy, you can print the pdf out of Word or export it out of Open Office free word processing program. If your version of win word doesn't save as pdf, then just get a free program like CutePDF to "print" it out as one (you select the program instead of a printer and it produces a pdf file)
It's important to know what you're doing with the book. Use sensible fonts, sensible page size and indents, the proper page size (probably 6 by 10 inches or 5 by 8) Think it out. Get advise from people who do it all the time.
The cover is trickier. After your book is uploaded, CS knows how thick it will be and how thick the "spine" of your cover will be. It prepares a template for you to use to set up the cover. You should be using it in a grraphics program that allows transparent layers.
I suggest Paint.net.
You basically fill in the template with your art, copy, space for barcode, etc. It must be 300 dpi artwork, as does any graphic in the book. Once you have assembled your cover on the template and removed the guidelines by eliminating that layer, you can crop down to the size of the cover spread (back cover and front cover with spine art and lettering in between)
It will be a little over 9 inches high for that size book, but the width won't be 12 inches, it will also include the width of the spine.
Anyway, you have your image the size it will appear wrapped around the book.
You open a file in your Word program, set margins to zero, set page size to the same size as your cover then insert the cover into the Word document.
Then save it as a pdf. Ta daaaa.
Order a couple of proof copies. You will go through one looking for typos and screw-ups, in addition to the mechanicals of the print job. Have some copies to give your friends. Ask them to help you debug. Display it artlessly in coffee houses to impress chicks. Fondle it.
Then upload the revised book and cover and order some more.
You can put your book for sale on the CreateSpace store (makes you more money) as well as amazon US amazon UK amazon Europe, plus buy them yourself to sell or sign or whatever. All that is no cost to you. For $25 you can get distribution to books stores and libraries.
Don't do that. Get real. You're an SP author, your habitat is the interenet and your sphere of personal influence.