I have done LoB once and it was the best.I'm not committed to the Grand View. How do you like to do Coron when you go?
Other times were land based in Coron town because of the overall cost of the resort eg, Sangat Island Dive Resort. D'Divers is another option. You ought to contact both of them and see what they can offer. Your stay on the island is relative short so you want to maximize the number of dives available. Some of the wrecks are big and deep. Have you got any particular one to explore eg. Irako, Akitsushima.
There is nothing in Coron town.
The airport is miles away and you do need to stay at least one night before your departure.