You sound quite mature and intelligent for a sixteen year old, however I don't think anyone with any sense at all, would advise you to acquire a monitor until you are an adult. I don't necessarily mean 18 or any other arbitrary age. It's more about when you are financially independent and can realistically make a commitment to the long term expense and duty of keeping a monitor lizard. For instance, what about when you go off to college?
If your situation is somewhat exceptional, maybe you could consider getting a small species of monitor such as V. acanthurus. That is the species I would recommend to anyone inexperienced with monitors, regardless of their age, or accomplishments in life.
I don't know what you have heard about V. melinus, but they are not appropriate at all for a first monitor. Regardless of what dealers will say, all melinus should be considered wildcaught or 'farm bred'. They will almost definitely harbor internal parasites. Both of my 'CBB' V. melinus have the same protozoan even though I acquired them separately.
They are very shy and secretive. They are not likely to tolerate handling or interaction. Those that think they are prone to being 'tame' are simply ignorant. I think a few factors lead to this ignorance. They are prone to internalize stress and "freeze up" when stressed. Many people interpret that as being tame. If they kept that supposedly tame monitor for any length of time it would end up dead from stress. Another factor is babies are different than adults. Very few people, have actually kept adult melinus. For several years there have been plenty of babies available, yet there don't seem to be many adults around. What does that tell you?
Quince/Yellow monitors are very demanding captives. Every day my melinus consume rodents, chicken peeps, and whole fish from an Asian market everyday. They never seem to get full. Lots of eating means lot of crapping. The always defecate in their water dish. Their water dish is a cement mixing tub with 3 gallons of water. About twice a day I lift the awkward tub containing 3 gallons of nasty poo water out of the cage, ever so carefully carry it and dump it, then wash with hot water from a special hose (fda beverage approved) I have setup outside for this purpose. Sounds like lots of fun huh?