Charles,
I would try to use the first half for tests that you outlined: had no other specific plans.
1) If seeing is good, see what magnitudes you can go down to and stil get any improvement, at say 100 Hz, from a list of pre-selected stars.
2) See how slow you can guide with WTTM. This would also be to test it's use as a mount guider, without needing to go to the IAS. So improvement in FWHM would not
be a criterion; just maintaining guiding. Will also, as you mention, test how low you can go for any improvement in FWHM (around 45 Hz is current yardstick for min. frequency). Needs reasonable seeing.
3) Focus error signal evaluation. Again needs good seeing.

3 in particular is going to be difficult given my limited experience. 1 and 2 not easy either and wil need planning. If seeing is bad and/or conditions cloudy, it looks like we may
be able to do a little of 2, not much of the others.

Dick can try focus scripts and other tests after we attempt any of the above that are possible. His observations, conditions permitting, are early morning as far as I know.