Canon Bellows FL

Ham...you'll need a FD-EOS adapter for the camera end, and a FD-lens adapter other end. Both adapters are easy to find on ebay...Ray

Your first link for the camera end is the correct one - you don't want additional optics involved, just an open mechanical connection. Ray may know a better place for one. At the lens end, the adapter is dictated by the lens you choose, given the number of differing mounting systems for lenses.

This one is probably the same but cheaper and still US seller:

http://www.ebay.com/itm/Canon-FD-FL...em4d078a59c5

As SD says, you will need to match your lens adapter to the lens you will use. Assuming you will use an enlarging lens with M39 mount, for FD lens you need to go to M42 first, then to M39. Here is an example from FD-M42:

http://www.ebay.com/itm/M42-SCREW-L...em20cdf3bdfc

And here is the M42-M39

http://www.ebay.com/itm/42mm-39mm-M...em1c1e4a55e3

this is a great place to search out old lenses and bellows stuff!
I also have this very same setup.......T1i and am using the old fl/fd
bellows....IT works great.....not only that.....its very in-expensive to use adapters for most all types of old lenses...say 39MM or 42mm lenses of the day which still are completely useable and the quality is wonder full for these old lenses even at today's standards at a fraction of the costs.......also most off brand/ non canon lenses adapter's are also cheap.. say Pentax...to FL/FD no problem..so in your good will shopping and come across something interesting... its cheap to experiment with....
One of the most interesting thing I learned hear conversing with Dave and Ray is they don't own 10 lenses...they have collected an arsenal......learning the ins and outs of many brand names...and comparing them as Ray has "richly" done in many a comparison article logged here...... Of the many types of bellow out there...your bellows is a fine one, possibly one of the top 3, for the money surely the best price range, my understanding is the Novoflex
has a greater.....but should say it has a "finer depth of field adjustment" as it takes more turns to get it into focus which is where

Macro photography shines..though the cost is around $150 my last look
I think the canon FL bellows is a solid strongly built bellows with stabillity and less vibration photo captures...

Do you actually have a lens yet? You might want to wait on purchasing adapters until you know which one you need....

Ham...I had forgotten which lenses you had. The adapters you bought will work with the Vivitar lens, but I believe both Spiratones are T-mount, correct? For T-mount you will need to buy another adapter. Here are a couple examples on ebay:

http://www.ebay.com/itm/Generic-for...em3ccc7cd555
http://www.ebay.com/itm/Qualide-T-M...em53e9440b88