I made a bamboo bike recently and the process is remarkably simple. You can align by eye if you're used to doing any work that requires some experience with this. My bike tracks perfectly.
I used bamboo from a flower shop and a garden center and chopped up a few steel frames for the necessary parts.
I didn't bother with heat treating. Tests show that as soon as you heat bamboo to a darker color you significantly weaken it (although it does become stiffer).
You will notice that bamboo poles in a typical selection may be splintered and cracked or perfectly sound. Since the sound bamboo has probably been sitting for several years through a huge range of moisture and heat cycles without cracking you can be more sure it will continue to do so in the future.
Imported bamboo has already been fumigated twice for bugs so it is hardly necessary to do that.
A good finish renders it impervious to moisture and appeal to insects anyway.

For gluing I would recommend going by a proven Epoxy system. I like System 3. Resins. They have an appropriate Epoxy for every application in the process and though it may not matter they are all likely more compatible with each other than using types from several companies.
I wrapped the lugs with a combination of Fiberglass, Carbon cloth and Manila hemp(for the natural look).
You need to cover the metal parts with glass cloth before you wrap with carbon. As far as tow versus cloth, by the time you finish wrapping a lug with tow it IS practically woven.

As far as worrying about torsional stiffness, I wouldn't. If you try to bend or twist a short length of bamboo tubing it is unyielding. If you wrap your lugs well they will increase the stiffness. With the ends of the tubes locked in place and all braced against each other the accumulated strength of all the parts is incredible.
Once you build one you will start replacing all your other bikes with a homemade version. I'm working on my TT bike now.
Interestingly I'm probably riding the only bamboo bike in Toronto right now and people don't even notice it.