good post jake.
yes a water monitor will get way bigger then 7ft try almost9. they are the second largest lizzard in the world.
i have a sav. he is relly tame. when i got him about a year ago he was a little standoffish. but i would get him out about 3 times a week and hold him for about 20 mins. he is now a dog. he eats medium rats every 3 days with some monitor bites in between. but i would also recomend a black throat as they are the close cusion to the sav. and are just a little neater as they get older. just keep in mind monitors = large food bill.