Have you ever used the new Photoshop express website, it interlinks with facebook, flickr, etc. Allows for a pretty decent post posting, the ability to share images and download content. Ordering pictures through it are branches off to shutterfly. Pretty neat, not really sure this is what your looking for but it works well for me.
www.photoshop.com Check it out it's free. On lighting, I take it that you're familiar with strobes and such since you mentioned umbrellas. Suggest main light and fill light. Not sure exactly what you have for equipment and your experience levels. I've reviewed your website and you seem to have a talent for posing. Love the Frame and family pics. I have a 16 year old and from the school pics that he's brought home are really simple. In my opinion are a little odd on posing. Again, from what I've seen on your website you'll do well. Good luck and be sure to share the results. I'm sure someone will ping in with more experience and give you a few more pointers.
I shoot mainly Military poses that are pretty much all the same, headshot at a 45 degree angle, American flag in backdrop etc.....Good Luck. If I can help let me know.
Another free website that host printing through several vendors is PICASA-google it. Great Free program that I really like alot. From there you can order.