Hi
Depends how much time and effort (and money) you want to spend on it.
Lifeshine is meant to be a permanent sealant, supposed to last a few years and reduce the need to add other protectants, and thus save time. Never had it though so can't comment on it's effectiveness.
However, if you polish or clay the car you will be removing the Lifeshine coating, and would have to reapply it (or an alternative sealant or coating) so think carefully about that. I imagine that AG Super Resin Polish would do the same, but read the aftercare guidance to be sure. There's nothing to stop you waxing over the top of it though, maybe with AG High Definition Wax.
As you've got the Lifeshine and are pushed for time, I would start simply and get into a good two bucket washing and drying regime first. Start with wheels first, using a separate bucket and dedicated mitt or wheel brush. Then wash rest of car from top down, making sure you rinse the mitt well between panels. Grit guards are useful to keep grit out of the mitt. Rinse car well, using an open ended hose for the final rinse. Avoid washing in direct sunlight, to minimise water marks. Dry off thoroughly with good microfibre towels.
Once you've got into good practice and have more time, then you can think about going into more depth with waxing etc
