FWIW, RideMax does have an option to create an itinerary for Enhanced FastPass (EFP) holders.
I do not think it is worth it to stay at DLR hotel only for EFP. The only advantage to EFP I can see is if you plan to get to the parks late every day (i.e., 2-4 hours after opening) . If you get there early, it is quite easy to get all the FPs you need the regular way. We were rarely able to use all of the FPs we collected the regular way, as long as we started collecting them first thing in the morning. If you arrive in the afternoon, there is a good chance FPs will be gone for the big rides. So EFP will not help you there either.
The multiple EE days for a DLR hotel guest has value, but how many times do you want to do FantasyLand?
If you are already inclined to stay at a DLR hotel, then by all means book thru
AAA and get the EFP.
Regarding RideMax, if your question is which will get you on more rides, RideMax or EFP, the answer, on average, is RideMax. If all you want to ride are FP rides, then EFP will get you on more (at considerably more expense, BTW). But most people want to ride the FP rides once a day - maybe some twice, and the other non-FP rides as well. EFP will not help you with non-FP rides at all, while RideMax will.
As pointed out by others, there is more to DLR than rides, and neither EFP or RideMax will help much there.