You can buy g+ at midnight, but realistically just get in and buy it at like 6:50 or so and you'll be good to go right at 7am. Make sure to filter rides through the selection process deal and ONLY pick Remy so it will be at the top of the app when you swipe down at 7am to refresh. Saves you a few seconds finding it and tapping through if you are trying to get an early ride time.
Ive not done the VQ before personally, but as long as you are in a party together in
MDE, he should be able to do the VQ for both of you at the same time as well. Try for that first, if you dont get it in it, immediately try for the $ILL if you are good paying for it. If you miss both you can try again for the afternoon VQ.