As for housing together that is your decision but most people do not advise it as previous members have stated. So I will not list the negatives again. Also comparing housing mamba's together and ball pythons does not make much sense, they are completely different species with different husbandry needs. Feeding venomous in the same enclosure is something even experienced hot keepers are extremely careful doing, there is a safe way to do so but the snakes are not going to 'share' food. They both eat the same amount and don't compete for food because they are most likely fed at the same time on opposite sides of the enclosure.
Regarding husbandry please get your temps down because 100-110 is way to high for your snakes as others have stated. An unregulated UTH WILL cause burns, please get a thermostat before your snakes get hurt. For hides, try using small cardboard boxes with no bottom or ideally, identical hides from reptile basics on each side of the enclosure, the tubes may be secure but do not provide the same security. Also theres no need to feed outside the enclosure as it will usually stress your snakes out more than necessary.
Sorry If I've repeated anything others have already stated, and please know that all of us here are just trying to help you care for your snakes in best way possible.