Hello Truro ! You systeme will run out of water too soon with the ceramic water spikes , It's summer (drying) and your plant will get bigger so will drink more during your vacation. The wicking technique is good (passive hydro) but you need to put a big water container for at least 3 weeks (math will helps). My better method in that kind of situation is to ... ask your bestfriend to do it 😂 , sound simple but it is in fact 😝 ! But seriously I would recommande you the "Tray" method , here is a link to ir :
www.youtube.com/watch !
Here are links to tutorials :
www.youtube.com/watch (wicking tech),
www.youtube.com/watch (tray tech part 2) Hope it will help a bit 😁