I don't know if it was mentioned earlier in these posts, but to dive these 100+ feet wrecks, you have to have your AOW. IMO, unless a wreck is above 70-80 ft, I find deep wrecks boring and you spend most of the dive descending and ascending with very little bottom time, plus you've lost all your colors. Deeper doesn't necessarily mean it's a better dive and it is a heavy load of nitrogen, which means a l-o-n-g surface interval.
I'm heading down to Key Largo, too, and I've had difficulty finding a smaller capacity boat operation that provides free guides. To my surprise, in-water guides in Florida is not the norm. Horizon charges $40 for a guide for one person or $25 per person for more than one. As a single diver, I want a guide in the water and Rainbow Reef provides free guides. Their web site states they have several boats, all of which cater to larger groups or smaller capacity. They've got packages structured so that the more you dive, the cheaper it gets, including the cost of nitrox. You don't have to prepay for a package and then worry about using up the package. You pay for what you dive at the end of your trip.
As a side note, a few years ago, I went diving with Ocean Divers in Key Largo. From Rainbow Reef's web site, Ocean Divers has now merged with Rainbow Reef. I had a great dive experience with Ocean Divers, and hopefully, that crew is still part of the merged operation.
I'm heading down to Key Largo, too, and I've had difficulty finding a smaller capacity boat operation that provides free guides. To my surprise, in-water guides in Florida is not the norm. Horizon charges $40 for a guide for one person or $25 per person for more than one. As a single diver, I want a guide in the water and Rainbow Reef provides free guides. Their web site states they have several boats, all of which cater to larger groups or smaller capacity. They've got packages structured so that the more you dive, the cheaper it gets, including the cost of nitrox. You don't have to prepay for a package and then worry about using up the package. You pay for what you dive at the end of your trip.
As a side note, a few years ago, I went diving with Ocean Divers in Key Largo. From Rainbow Reef's web site, Ocean Divers has now merged with Rainbow Reef. I had a great dive experience with Ocean Divers, and hopefully, that crew is still part of the merged operation.