Looks ok.
CIOS 249 has a rev20, but you can stick to 19 if you want.
You could install 236 installer IOS236.
A lot of people are leaving IOS 36 unpatched (yours is patched, thats fine, mine is too) and using IOS236.
Basically it is IOS36 patched and installed to the 236 slot.
But I...