So I have spent a long time collecting soft kit stuff while I wait for my helmet to get here and for me to finish my splinted armor... Yesterday I got my braies, chausses (linen since it is so hot in NC) and an undershirt based on the Louis...
Looks really good! If you can, cinch your hose up higher on the hips so they pull tight. They should sit smooth on the leg. If they're too big along the length of the leg an easy way to fix them is put them on inside-out, pinch along the seem to gather up the excess, pin them in place to get a nice fit, then sew right up the pin line and you've got custom fit hose. Then a garter below each knee to keep them smooth on the calf. Just make sure you leave enough room for your foot to go through since linen does not stretch like wool.
For attaching the hose there's a lot of evidence for a braies girdle, or a belt that holds up the braies and serves as a good point to attach the hose. There's a big discussion on the AA going on about braies girdles and hose attachment right now. You may want to experiment. Some people find that when they tie their hose up tight to a draw-string on the braies that it pulls your braies down. I plan on making a braies girdle to try it out and see if it works better.
And wool is not automatically hotter than linen, it's all dependent on the weight of the fabric. HE's wool hose are a nice thin wool, very breathable and fine for hot weather. All natural fibers, be them wool or linen or even cotton breathe unlike synthetics.
Here's Mac's braies girdle (note how high they sit). The thinking now is they're going to start experimenting with a belt inside the casing of the braes that also has the ability to attach hose via points or brooches like on Mac's example:
