Okay i am 13 and i got my brazillian rainbow boa a month after my ball python and shes not much harder besides the high humidity requirments. She is great snake and has only bit me once the first tim i held her and she even lets me rub her neck and she seems to like it (i know she just like the heat)
I think brbs would be an excelent choice i mean they are so nice to look at as well.

I might aquire a sumatran short tailed python (black blood) which is the smalest of the blood pythons but still get very heavy.

I cant say much about lizards